A PCB assembly passes visual inspection. Automated optical inspection finds nothing. Functional test at room temperature is clean. The board ships, gets installed in a vehicle, and three months later starts producing intermittent faults that are difficult to reproduce and expensive to trace. The cause, when it is eventually found, is ionic contamination. Residual flux activator left on the board surface after soldering, invisible to optical methods and undetectable by functional test under dry conditions, has begun to drive electrochemical corrosion and leakage current in the presence of operating temperature cycling and humidity. The contamination was there from the start. The damage accumulated over time. Anion and cation testing by ion chromatography is the analytical method that would have found it. This article explains how the test works, what it detects, why it matters specifically for automotive electronics, and how to interpret the results it produces. What Is Ionic Contamination and Why Does It Matter? Ionic contamination refers to charged chemical species, either positive ions (cations) or negative ions (anions), present on the surface of an electronic assembly or component. In the context of PCB manufacturing and assembly, ionic contamination originates primarily from flux residues left after soldering. All soldering fluxes contain activators, which are acidic or ionic compounds that break down the metal oxides on solder pads and component leads to allow good solder wetting. After soldering, these activators and their reaction products remain on the board surface as ionic residues. Under dry conditions, ionic residues are typically benign. They sit on the surface, insoluble in dry air, causing no immediate problem. The failure mode is activated by moisture. When humidity rises or when condensation occurs on the board surface, ionic residues dissolve into a thin electrolytic film. That film becomes a conductive path between adjacent conductors. Current flows where it should not. In the presence of an applied voltage, the ionic species migrate: cations move toward the cathode and anions toward the anode, depositing metal at the cathode in a process called dendritic growth or electromigration. Dendrites are metallic crystalline growths that bridge the gap between conductors, causing intermittent or permanent short circuits. The ionic species of greatest concern are those that are most mobile, most soluble, and most corrosive: chloride, fluoride, bromide, sulfate, acetate, and formate on the anion side; sodium, potassium, and ammonium on the cation side. Ammonium and organic amines from no-clean flux formulations are particularly significant because they indicate the presence of insufficiently activated or partially decomposed flux residues that retain moisture-absorbing and corrosion-promoting properties. Ionic contamination is a latent failure mechanism. It is present from the moment of manufacture but causes damage only when activated by humidity and temperature. Testing before shipment is the only reliable way to detect it before it reaches field conditions.   How Ion Chromatography Works Ion chromatography (IC) is an analytical technique that separates and quantifies ionic species in a liquid sample. The technique was developed in the 1970s and has become the standard method for trace ionic analysis across water quality, food safety, pharmaceutical, and electronics testing applications. The operating principle is ion exchange chromatography. A liquid sample is injected onto a column packed with a charged stationary phase. Ionic species in the sample are attracted to and retained by the stationary phase, then released sequentially as the mobile phase gradient changes. Because different ions have different affinities for the stationary phase, they travel through the column at different speeds and emerge at the detector at different times, producing a chromatogram with a distinct peak for each ionic species. Detection in modern IC systems uses a suppressed conductivity detector. As each ionic species elutes from the column, it passes through a suppressor device that converts the mobile phase background ions to low-conductivity water, leaving the analyte ions as the dominant conductivity signal. This suppression step dramatically improves sensitivity and selectivity, allowing detection of ionic species at concentrations of parts per billion (micrograms per litre) in solution, which translates to nanograms per square centimetre on a PCB surface. Quantification is achieved by comparison with external calibration standards: solutions of known ionic concentration that are run alongside the samples and used to construct a calibration curve for each ionic species. The result for each ion is expressed as the measured concentration in the extract solution, which is then converted to surface density (typically micrograms per square centimetre) using the board surface area extracted. Anion Analysis vs Cation Analysis Anion and cation analysis require separate analytical conditions because anions and cations have opposite charges and require stationary phases and mobile phases of opposite polarity for effective separation. In practice, most IC instruments configured for anion analysis use an anion exchange column with a carbonate or hydroxide mobile phase, while cation analysis uses a cation exchange column with a dilute acid mobile phase. The two analyses can be conducted sequentially on the same instrument platform or simultaneously on a dual-channel instrument. For a comprehensive ionic contamination assessment, both anion and cation analysis should be conducted from the same extraction solution, providing a complete profile of all ionic species present. The Standard Method IPC-TM-650 2.3.28 The primary standard governing ionic contamination testing of PCBs and electronic assemblies by ion chromatography is IPC-TM-650 Method 2.3.28, published by IPC (the Association Connecting Electronics Industries). This method defines the extraction procedure, the IC analytical conditions, and the reporting requirements for ionic contamination testing. The extraction procedure in IPC-TM-650 2.3.28 uses a mixture of 75 percent isopropyl alcohol and 25 percent deionised water (the IPA-water extract). The board or assembly is placed in a clean vessel and covered with a defined volume of the extraction solvent. The extraction is conducted for one hour at 80 degrees Celsius under agitation. The extract is then filtered and injected into the IC system for anion and cation analysis. The extraction is designed to dissolve ionic species from the board surface into the solvent, including flux residues that are not fully soluble in water alone. The IPA component improves dissolution of organic flux residues while the water component provides the ionic medium for dissolution of inorganic ionic contaminants. The result is an extract that captures the full range of ionic species relevant to electronics reliability assessment.   Ionic Species Ion Type Primary Source on PCB Failure Risk Chloride (Cl-) Anion Flux activator residue, environmental deposition, halogenated materials High – aggressive corrosion initiator, highly mobile Fluoride (F-) Anion Some flux formulations, etching process residues Moderate to high – corrosive to aluminium and some metals Bromide (Br-) Anion Flame retardant materials, some flux systems Moderate – corrosive at higher concentrations Sulfate (SO4 2-) Anion Environmental deposition, some flux chemistry Moderate – sulfate-induced corrosion Nitrate (NO3-) Anion Environmental, some cleaning chemistry Low to moderate – less corrosive than chloride Acetate (CH3COO-) Anion No-clean flux activator decomposition products Moderate – hygroscopic, promotes leakage current Formate (HCOO-) Anion No-clean flux activator decomposition products Moderate – indicates flux residue activity Sodium (Na+) Cation Environmental, handling contamination, process water Moderate – hygroscopic, promotes corrosion Potassium (K+) Cation Environmental contamination Moderate Ammonium (NH4+) Cation No-clean flux amine activators, flux decomposition High – hygroscopic, indicates active flux residues Methylamine / TEA Cation (amine) No-clean flux amine-based activators High – indicates incompletely deactivated flux   Chloride and ammonium are the two most diagnostically significant species in PCB ionic contamination testing. Elevated chloride indicates aggressive corrosion risk. Elevated ammonium or organic amines indicates the presence of active no-clean flux residues that retain corrosion-promoting properties. Interpreting Anion and Cation Test Results IC results for PCB ionic contamination are expressed as micrograms of each ionic species per square centimetre of board surface area. These surface density values are compared against the acceptance limits defined in the applicable cleanliness specification. Acceptance Limits & Where Do the Numbers Come From? Acceptance limits for ionic contamination in PCB assemblies originate from a combination of IPC standards, OEM-specific cleanliness specifications, and the results of reliability studies correlating ionic contamination levels with field failure rates. The most widely referenced historical limit is 1.56 micrograms sodium chloride equivalent per square centimetre, which was the original threshold defined for cleaned assemblies in earlier revisions of IPC standards. Modern automotive electronics specifications typically apply tighter limits, particularly for chloride, which is often limited to 0.2 to 0.5 micrograms per square centimetre for safety-critical assemblies. The specific limit applicable to your assembly is defined by your customer’s specification, the relevant IPC document (IPC-7711, IPC-7721, or the cleanliness section of J-STD-001), or the OEM supplier quality requirement. What High Chloride Tells You Elevated chloride concentration is the most common and most diagnostically significant finding in PCB ionic contamination testing. The sources of chloride contamination on a PCB include residual flux activator (particularly from rosin and organic acid flux systems), environmental deposition of chloride aerosols in manufacturing or storage environments, and halogenated materials in the board laminate or component packaging that have been mobilised during processing. When chloride is elevated above specification, the corrective action depends on identifying the source. If chloride tracks with the presence of specific component types or board regions near specific assembly operations, the source is likely process-related. If chloride is uniformly distributed across the board, environmental contamination during storage or handling is more likely. IC results alone identify that chloride is elevated; source investigation may require additional analytical steps including surface mapping by point extraction from specific board areas. What Ammonium and Organic Amines Tell You Ammonium and organic amine cations are characteristic markers of no-clean flux residue activity. Modern no-clean flux formulations use amine-based activators that are designed to fully decompose and become electrochemically inert during the soldering thermal profile. When ammonium or methylamine is detected at elevated levels in IC analysis, it indicates that the flux activator has not been fully deactivated, either because the soldering thermal profile was inadequate, the flux loading was excessive, or the specific flux chemistry is not compatible with the soldering process conditions. This finding is significant because it means the residue retains hygroscopic and corrosion-promoting properties even though the board may have been manufactured under a no-clean process that is not expected to require cleaning. The corrective action is typically thermal profile optimisation, flux type review, or in some cases, a move to a cleaning process to remove the residue entirely. Ion Chromatography vs ROSE Testing & Understanding the Difference Ion chromatography is not the only method for assessing ionic contamination on PCBs. An older technique, ROSE testing (Resistivity of Solvent Extract), is still used in some applications and is worth understanding in the context of IC analysis. ROSE testing measures the total ionic content of a board extract by its electrical conductivity, expressed as equivalent sodium chloride contamination in micrograms per square centimetre. It is a rapid, low-cost method that provides a single aggregate number representing all ionic contamination on the board. It does not identify which ionic species are present or in what proportions. Ion chromatography supersedes ROSE testing in technical information value. IC identifies each ionic species individually, enabling diagnosis of the contamination source and targeted corrective action. ROSE testing tells you that contamination is present above a threshold. IC tells you what it is and, by inference, where it came from. For automotive electronics qualification, where the identity of contaminating species is increasingly required by OEM specifications and where root cause investigation of any failures is mandatory, IC is the appropriate method.   Dimension ROSE Testing Ion Chromatography (IC) Output Single conductivity number (NaCl equivalent) Individual concentration of each anion and cation Species identification None Full identification of all ionic species present Sensitivity Moderate High – parts per billion detection in extract Diagnostic value Low – pass/fail only High – identifies species and enables source tracing OEM acceptance Declining – many specs now require IC Accepted by all major automotive OEM specifications Standard reference IPC-TM-650 2.3.25 IPC-TM-650 2.3.28 Cost Lower Higher – more information per test Typical application Production line screening where IC is used for qualification OEM qualification, failure investigation, process validation Ionic Contamination in Automotive Electronics & Why the Stakes Are Higher Ionic contamination matters in all electronics applications, but the consequences in automotive electronics are more severe than in most other sectors. Automotive electronics operate in conditions that maximise the risk of ionic contamination driven failure: wide temperature cycling that promotes condensation, vibration that can crack conformal coatings and expose underlying surfaces, extended service lives measured in decades rather than years, and safety-critical functions where intermittent faults have direct consequences for driver safety. An engine control unit that develops an intermittent fault from ionic contamination-driven leakage current is not a product return. It is potentially a safety incident, a warranty campaign, and a significant engineering investigation. The cost difference between finding ionic contamination before shipment by IC testing, and finding it after installation in vehicles through field failures, is several orders of magnitude. For automotive electronics manufacturers in Malaysia and Southeast Asia, the ionic contamination testing requirement typically enters the supply chain through OEM qualification requirements, customer cleanliness specifications, or process qualification programmes. Where no specific limit has been defined by the customer, the IPC standards provide a framework for establishing appropriate internal cleanliness limits based on the application criticality. For the full range of chemical and electronics testing services including ionic contamination analysis: https://www.alstesting.co.th/anion-test-specialist-malaysia/ Ionic Contamination and Component Cleanliness & The Connection Ionic contamination testing on PCBs and technical cleanliness testing on precision mechanical components address the same fundamental problem from different perspectives: contamination that is invisible to standard inspection methods but causes field failures in service. The analytical techniques differ but the quality management principle is identical. For manufacturers who produce both precision mechanical components and automotive electronics, or who supply into supply chains that require both types of testing, understanding the connection between the two disciplines helps in establishing a coherent quality testing programme. In both cases, the contamination is measured at a level of precision that only accredited laboratory analysis can provide, the results are compared against defined limits, and the findings drive corrective action in the manufacturing process. For technical cleanliness testing of precision mechanical components to ISO 16232 and VDA 19:  https://www.alstesting.co.th/technical-cleanliness-testing/ Ion Chromatography at ALS Testing ALS Testing provides anion and cation analysis by ion chromatography to IPC-TM-650 2.3.28 for PCB assemblies, individual components, and process solution analysis. Our IC capability covers the full range of ionic species relevant to electronics reliability assessment: the primary anions including fluoride, chloride, bromide, nitrate, phosphate, sulfate, acetate, and formate; and the primary cations including sodium, potassium, ammonium, and the amine species associated with no-clean flux residues. All ionic contamination testing at ALS is conducted within our ISO/IEC 17025:2017 accredited quality management system. Results are reported with individual species concentrations in micrograms per square centimetre, compared against the limits specified in your cleanliness specification or OEM requirement, with clear pass/fail designation for each species and for the total ionic contamination level. Our reports include the full IC chromatogram data alongside the tabulated results, enabling your engineering team to review the species profile and make informed decisions about corrective action priorities. For investigations where elevated ionic contamination has been detected and source tracing is required, we can design follow-up sampling strategies including area-specific extractions to localise contamination to specific board regions or process steps. Summary Anion and cation testing by ion chromatography is the definitive analytical method for ionic contamination assessment of PCBs and automotive electronics assemblies. It identifies individual ionic species at concentrations that are analytically significant but invisible to all other inspection methods, enabling both pass/fail qualification and diagnostically useful information about contamination sources and corrective actions. The primary standard for the test is IPC-TM-650 2.3.28. The most diagnostically significant species are chloride on the anion side, which indicates aggressive corrosion risk, and ammonium and organic amines on the cation side, which indicate active no-clean flux residues that retain corrosion-promoting properties. IC supersedes ROSE testing in diagnostic value and is the method required by automotive OEM cleanliness specifications. For automotive electronics manufacturers, the cost of finding ionic contamination before shipment through IC testing is a small fraction of the cost of the field failures it prevents. For production-line application, IC provides the species resolution that allows root cause investigation and targeted process improvement rather than pass/fail screening alone. Next Steps See our full Chemical and Electronics Testing services including ionic contamination analysis:  https://www.alstesting.co.th/anion-test-specialist-malaysia/ Learn about technical cleanliness testing for precision mechanical components: https://www.alstesting.co.th/technical-cleanliness-testing/ Contact our team for an IC testing quotation or technical consultation: https://www.alstesting.co.th/contact-us/

Walk into a new car and you notice it immediately. That distinctive new-vehicle smell is not a design feature. It is the combined off-gassing of dozens of materials installed in the cabin: adhesives curing under the instrument panel, plasticisers migrating from PVC surfaces, flame retardants volatilising from foam seating, solvent residues evaporating from trim adhesives. Most of these compounds dissipate over weeks and months. Some of them, at high enough concentrations, raise health concerns. This is the problem that VOC testing for automotive interiors is designed to address. For materials and components suppliers in the automotive supply chain, VOC testing is not optional. It is a qualification gate that your interior material must pass before an OEM will approve it for production, and increasingly it is a regulatory requirement in markets where cabin air quality limits are defined by law. This article explains what automotive VOC testing involves, which standards govern it, how the laboratory methods work, and what you need to prepare before submitting materials for testing. What Are VOCs and Why Do They Matter in Automotive Interiors? VOC stands for volatile organic compound. The term covers a broad class of carbon-based chemicals that evaporate readily at room temperature or under mild heating. In the context of automotive interior materials, VOCs originate from the raw materials used in manufacturing, from residual processing chemicals, and from the chemical reactions that continue as materials age, heat, and interact with each other inside the vehicle cabin. The interior of a modern vehicle is a complex assembly of polymer components: instrument panels, door trim, headliners, seat foams, floor carpets, steering wheels, and the adhesives and coatings that hold them together. Each of these materials has a VOC emission profile. In a sealed cabin at ambient temperature, the combined emissions from all interior materials accumulate to define the overall cabin air quality. At low concentrations, most VOCs are not acutely harmful. At higher concentrations, compounds including benzene, toluene, xylene, formaldehyde, and acetaldehyde are associated with eye and respiratory irritation, headache, and in the case of benzene and formaldehyde, longer-term health concern. The regulatory and OEM response has been to define maximum permissible emission limits for individual compounds and compound groups, enforced through material qualification testing at the supplier level. The materials in a vehicle cabin are tested individually by the supplier before assembly. By the time a vehicle reaches the consumer, every significant interior material has been qualified against VOC emission limits. VOC testing is where that qualification happens. For automotive materials suppliers in Malaysia and Southeast Asia, the primary VOC testing requirements come from two directions: German OEM specifications referencing VDA 278 and associated standards, and broader international specifications referencing ISO 12219. Suppliers who serve both markets, or who supply into global Tier-1 supply chains, often need to satisfy both frameworks. The Key Standards for Automotive VOC Testing VDA 278 Thermal Desorption Analysis VDA 278 is the most widely referenced standard for VOC and semi-volatile organic compound (SVOC) analysis of automotive interior non-metallic materials. It is published by the VDA, the German Automotive Industry Association, and is required by German OEMs including BMW, Volkswagen Group, Mercedes-Benz, and Audi, as well as by the broader Tier-1 supply chains that serve these customers. The method uses thermal desorption combined with gas chromatography and mass spectrometry (TD-GC-MS). A small sample of the material, typically one to three grams, is placed in a glass sample tube and heated in two stages. The first heating stage at 90 degrees Celsius drives off the volatile organic fraction, corresponding to compounds with boiling points up to approximately 250 degrees Celsius. The second heating stage at 120 degrees Celsius drives off the semi-volatile or fogging fraction, corresponding to higher-boiling condensable compounds. The compounds emitted at each stage are collected on a Tenax sorbent tube, then thermally desorbed and injected into the GC-MS system for identification and quantification. Results are reported in micrograms per gram of material for the VOC fraction and separately for the SVOC or FOG fraction. Pass/fail assessment is made against the emission limits specified in the relevant OEM or customer specification. VDA 278 produces a compound-by-compound profile of emissions. For each individual compound identified above the reporting threshold, the result includes the compound name, its CAS number, and its concentration. This level of detail is important because OEM specifications typically define limits for specific compound categories (for example, total aromatic hydrocarbons, or individual aldehyde limits) rather than a single total VOC number. ISO 12219 The International Standard Series ISO 12219 is a multi-part international standard covering VOC measurement in vehicle interiors. Different parts address different aspects and scales of measurement. ISO 12219-1 covers VOC measurement in complete vehicle cabins using the bag method: the vehicle is sealed under defined conditioning conditions and a sample of cabin air is collected in a Tedlar bag for subsequent analysis. This is used for type approval and vehicle-level compliance, rather than material-level supplier qualification. ISO 12219-2 through to ISO 12219-7 cover VOC emission measurement from individual components and materials using chamber methods of varying scales, from large climate chambers down to micro-scale chamber devices. These methods are used at the material and component qualification stage and are referenced by OEM specifications that align with ISO rather than VDA frameworks. For most materials suppliers, the relevant parts of ISO 12219 are those covering component-level testing, which is where individual materials are assessed before vehicle assembly. If your OEM specification references ISO 12219, confirm which specific part or parts are required and at what test conditions. VDA 275 Formaldehyde by Photometric Analysis Formaldehyde is a specific VOC that receives dedicated attention in automotive interior specifications. It is emitted from wood-based composites, certain adhesives, and resins used in interior components, and is subject to individual emission limits that are typically tighter than the general aldehyde group limits applied in thermal desorption analysis. VDA 275 defines a bottle method for formaldehyde determination: the sample is placed in a sealed glass bottle with distilled water and conditioned at 60 degrees Celsius for three hours. The formaldehyde emitted into the headspace dissolves in the water and is quantified by UV-Vis spectrophotometry using a colorimetric reagent. Results are expressed in micrograms per gram of material. This dedicated method is more sensitive and specific for formaldehyde than the thermal desorption approach used in VDA 278, and is required separately by most German OEM specifications. ISO 6452 Fogging Testing Fogging is a related but distinct phenomenon. It refers to the deposition of condensable vapours from interior materials onto the vehicle windscreen as a visible film. The fog film impairs driver visibility and is particularly problematic in cold weather conditions when the windscreen temperature is low enough to promote condensation. ISO 6452 defines both gravimetric and photometric methods for fogging assessment. In the gravimetric method, a sample is heated in a glass beaker and the vapours condense on a cooled aluminium foil disc placed above the sample. The mass of the deposit is the fogging result. In the photometric method, the deposit forms on a glass disc and is measured by change in reflectance before and after the test. Different OEM specifications reference different methods and apply different acceptance criteria.   Where HPLC Fits in VOC Testing High performance liquid chromatography (HPLC) is not the primary technique in automotive VOC testing, where thermal desorption GC-MS is the dominant method. However, HPLC plays a specific and important role in the analysis of certain compounds that are not well-served by GC-MS approaches. The most significant application of HPLC in automotive VOC testing is the analysis of carbonyl compounds, particularly aldehydes and ketones. Formaldehyde, acetaldehyde, acrolein, benzaldehyde, and other carbonyls are collected by drawing air or headspace vapour through a cartridge impregnated with 2,4-dinitrophenylhydrazine (DNPH). The carbonyl compounds react with DNPH to form stable hydrazone derivatives, which are then eluted from the cartridge and analysed by HPLC with UV detection. This DNPH-HPLC method provides better sensitivity and specificity for individual aldehyde species than thermal desorption GC-MS, and is specified by some OEM and regulatory frameworks for carbonyl compound determination. ISO 16000-3, which covers determination of formaldehyde and other carbonyl compounds in indoor air, uses this DNPH-HPLC approach, and it is applied in some automotive interior air quality programmes where individual aldehyde quantification to low levels is required. HPLC is the method of choice when individual aldehyde species including formaldehyde need to be quantified at concentrations below the practical range of thermal desorption GC-MS, or where a regulatory framework specifically requires the DNPH-HPLC approach. If your specification references a DNPH-HPLC method for aldehyde determination, please confirm this requirement at the enquiry stage so our team can advise on the appropriate approach for your application. Which Materials Require VOC Testing? Any non-metallic material used inside the vehicle cabin is a potential candidate for VOC testing. In practice, the materials that receive the most attention are those with the highest emission potential or the largest surface area exposed to cabin air.   Material Category Primary VOC Concern Typical Standard Applied Instrument panels and dashboard covers Aromatic hydrocarbons, plasticisers (SVOC/FOG) VDA 278, OEM-specific Headliners and roof lining Formaldehyde from binder resins, aldehyde compounds VDA 278, VDA 275 Seat foam (polyurethane) Amine compounds, acetaldehyde, TDI residues VDA 278 Floor carpets and underfelt Formaldehyde from latex binder, styrene VDA 278, VDA 275 Door trim panels Aromatic hydrocarbons, plasticisers VDA 278 Adhesives and sealants Solvents, residual monomers VDA 278, customer-specific Coatings and paints (interior surfaces) Solvents, residual monomers, reactive diluents VDA 278, ISO 12219 Steering wheel covers and grips Plasticisers, rubber processing aids VDA 278, fogging ISO 6452 Rubber seals and gaskets (interior-facing) Sulfur compounds, plasticisers VDA 278 Wire insulation and cable jacketing Plasticisers, flame retardant emissions VDA 278, customer-specific   The test requirement is typically defined in the material specification or the OEM supplier quality manual. If you are uncertain whether your material requires VOC testing and to which standard, the starting point is the customer’s material specification document or the PPAP requirement list for the programme. The VOC Testing Process: From Sample to Report Sample Conditioning and Preparation The conditioning of material samples before testing is defined by the standard and significantly affects the results. VDA 278 specifies that samples should be conditioned at 23 degrees Celsius and 50 percent relative humidity for seven days before testing, in a clean environment free from interfering VOC sources. This conditioning period allows the initial burst of highly volatile compounds from freshly manufactured or packaged materials to stabilise, so that the test reflects the material’s emission profile under conditions more representative of normal cabin use. The sample size is defined by VDA 278: typically one to three grams of material, cut to fit the sample tube. Sampling location matters for heterogeneous materials – the test result reflects the specific layer or region of the material that was sampled, not necessarily the entire component. For composite materials with multiple layers, different layers may be tested separately if their VOC profiles are likely to differ significantly. Thermal Desorption and GC-MS Analysis The conditioned sample is placed in the thermal desorption tube and the tube is loaded into the thermal desorption unit. The tube is purged with carrier gas while being heated to the first temperature stage (90 degrees Celsius for the VOC fraction), and the desorbed compounds are collected on the cold Tenax trap. The trap is then rapidly heated and the collected compounds are injected as a concentrated plug into the GC column. Separation by gas chromatography resolves the mixture of compounds into individual peaks. Each peak is identified by comparison with reference compound spectra in the mass spectrometry library and confirmed by retention time matching with reference standards. Quantification uses either external calibration against reference standards of individual compounds, or a total ion chromatogram approach with a representative standard compound for groups of similar compounds. The SVOC or FOG fraction is determined by repeating the desorption procedure at 120 degrees Celsius with a new sample or with the same sample after the VOC desorption stage, depending on the protocol specified. Reporting and Pass/Fail Assessment The test report lists each identified compound by name, CAS number, and concentration in micrograms per gram of material. Compounds are grouped by chemical class: aromatic hydrocarbons, aldehydes, ketones, alcohols, esters, and other categories. The total concentration within each class and the overall total VOC (TVOC) are calculated and reported alongside the individual compound data. Pass/fail assessment is made by comparing measured concentrations against the limits defined in the applicable OEM specification. Limits may be defined as individual compound limits (for example, formaldehyde below 10 micrograms per gram), group limits (for example, total aromatic hydrocarbons below 100 micrograms per gram), and overall TVOC limits. A material fails if any individual limit or group limit is exceeded. Common Reasons for VOC Test Failure and What to Do Understanding why materials fail VOC tests is as useful as understanding what the tests measure. The most common failure causes in automotive interior materials are: Residual processing solvents: adhesives, coatings, or laminates that have not been fully cured or dried before testing. The solution is typically process optimisation to ensure adequate cure or drying conditions before material dispatch. Plasticiser migration: high-boiling phthalate or non-phthalate plasticisers from PVC or flexible polymer components contributing to the SVOC or FOG fraction. Reformulation with lower-emission plasticisers, or reduction of plasticiser loading, is the typical response. Formaldehyde from binder resins: textile materials, wood composites, and certain foam systems use formaldehyde-based binder resins. Low-emission or formaldehyde-free binder alternatives are available for most applications. Amine compounds from polyurethane foam: certain foam formulations emit amine compounds as the urethane reaction proceeds. Catalyst selection and foam formulation adjustment can reduce amine emissions. Contamination during conditioning or packaging: if samples are conditioned or stored in environments with high ambient VOC levels, background contamination can elevate results. Clean conditioning environments and clean packaging materials are essential. In most cases, VOC test failures are solvable through material formulation adjustment, process optimisation, or changes to raw material selection. The failure report from an accredited laboratory identifies the specific compounds responsible, which provides the information needed to target corrective action precisely. VOC Testing at ALS Testing ALS provides VOC testing for automotive interior materials to VDA 278, VDA 275, and ISO 12219 frameworks. For aldehyde-specific determination requirements, please contact our technical team to confirm the appropriate method for your specification. Our testing is conducted within our ISO/IEC 17025:2017 accredited quality management system, with results formatted to meet OEM submission requirements. Our reports include the full compound-by-compound profile with compound identification, CAS numbers, concentrations, and pass/fail assessment against the specified limits. For clients submitting materials for German OEM qualification programmes, our reports are structured to meet the documentation requirements of the relevant OEM supplier quality system. We serve materials suppliers and component manufacturers across Malaysia and Southeast Asia, with experience across the full range of automotive interior material types: polymers, foams, textiles, adhesives, coatings, and composite structures. If your specification falls outside the standard VDA 278 or ISO 12219 framework, our technical team will review the requirement and advise on the appropriate test method. Summary: What You Need to Know Before Submitting VOC testing for automotive interiors is a qualification requirement, not a formality. The standard you test to is determined by your OEM or customer, not by your preference: German OEMs require VDA 278 and typically VDA 275 for formaldehyde; international OEMs reference ISO 12219. Both frameworks require testing by an ISO/IEC 17025 accredited laboratory for formal qualification purposes. The compounds that most commonly drive failures are residual solvents, plasticisers, formaldehyde from binder resins, and amine compounds from polyurethane processing. Identifying which compound drove a failure is the starting point for effective corrective action. Where specifications require aldehyde-specific determination at high sensitivity, DNPH-HPLC is a complementary approach applied in addition to thermal desorption GC-MS. It is not a replacement for GC-MS, which remains the primary method across both VDA 278 and ISO 12219 frameworks. Next Steps See our full Materials and Environmental Testing services for automotive:  https://www.alstesting.co.th/automotive-materials-environmental-testing-als-testing/ Read our detailed VDA 278 explainer including test conditions and reporting format: /blog/vda-278-explainer/ Back to Automotive Testing Hub for the full service overview:  https://www.alstesting.co.th/automotive-testing-services-als-testing-laboratory/ Contact our team for a VOC testing quotation or technical discussion:  https://www.alstesting.co.th/contact-us/

When an automotive component fails in the field, or returns from an OEM qualification test with an unexplained result, the investigation eventually reaches a question that cannot be answered with a magnifying glass. The fracture surface looks unusual under optical microscopy, but the relevant features are below the resolution limit. The corrosion morphology suggests a specific mechanism, but you cannot confirm it from a visual examination. A particle was found on a critical surface, but its identity and origin are unknown. Scanning electron microscopy resolves that question. SEM is the analytical bridge between what you can observe at the macro scale and what you need to know at the micro and nano scale. It is the single most powerful imaging tool available for failure analysis work in automotive manufacturing, and it is the technique that separates a surface-level investigation from a definitive root cause conclusion. This article explains how SEM analysis works, what makes it uniquely suited to automotive failure investigation, and the specific applications where it delivers information that no other technique can provide. How Scanning Electron Microscopy Works Optical microscopy uses visible light to form an image. The resolution limit of optical microscopy is set by the wavelength of light, which constrains maximum useful magnification to approximately 1,000 to 2,000 times. Beyond that limit, the image becomes blurred rather than more detailed. For many failure analysis scenarios, this is insufficient. Fatigue striations, grain boundary features, corrosion pit morphology, and the surface texture of fracture faces all occur at scales that demand higher resolution. Scanning electron microscopy replaces the light beam with a focused beam of electrons. Electrons have a wavelength several orders of magnitude shorter than visible light, which is what allows SEM to achieve resolution several hundred times greater than optical microscopy. The practical result is that SEM can produce sharp, detailed images at magnifications from approximately 20 times up to 100,000 times or higher, with a depth of field that is far greater than optical microscopy at equivalent magnifications. The operating principle is sequential scanning. The electron beam is rastered across the sample surface in a grid pattern. At each point, the beam interacts with the sample and generates signals that are detected and used to construct the image. The most commonly used signal in standard SEM imaging is secondary electrons, which are low-energy electrons ejected from the sample surface by the primary beam. Because secondary electron emission is highly sensitive to surface topography, secondary electron images show the three-dimensional texture of the sample surface with exceptional clarity. A second commonly used signal is backscattered electrons, which are primary beam electrons reflected back from the sample by elastic scattering. Backscattered electron intensity is strongly dependent on the atomic number of the elements in the sample: heavier elements appear brighter and lighter elements appear darker. This makes backscattered electron imaging valuable for identifying compositional contrast across a sample surface, for example distinguishing different phases in an alloy microstructure or identifying heavy-element inclusions in a polymer matrix. SEM gives you the surface of a component or fracture face at a scale where the failure mechanism leaves its clearest physical record. What happened to a component is written in features that are tens to hundreds of micrometres in size. SEM reads that record.   Sample Preparation for SEM Most metallic and ceramic samples can be imaged directly in the SEM without preparation, provided they are clean and appropriately sized for the sample chamber. Non-conducting samples, including most polymers, rubber, and unfilled ceramics, require a thin conductive coating applied by sputter deposition, typically gold, platinum, or carbon, to prevent the sample surface from charging under the electron beam. Charging causes image distortion and artefacts that interfere with analysis. The coating layer is typically 5 to 20 nanometres thick and does not obscure the surface features of interest. For cross-section analysis, samples are prepared by cutting through the area of interest, embedding in a low-shrinkage resin, and grinding and polishing to a metallographic finish. This reveals the internal structure of the component at the cut plane, including coating layers, grain structure, crack paths, and interface morphology, all of which can then be imaged and analysed by SEM. Sample preparation is a critical step that directly affects the quality of SEM results. Contamination introduced during preparation, or damage to fracture surfaces from careless handling, can mask or destroy the very features the analysis is designed to reveal. Experienced analysts handle samples with this in mind from the moment of receipt.   SEM Resolution and Magnification & What the Numbers Mean in Practice Resolution and magnification are related but distinct concepts. Magnification tells you how many times larger the image is than the object. Resolution tells you the smallest feature the instrument can distinguish as separate from its neighbour. Modern SEM instruments achieve practical working resolution of 3 to 20 nanometres depending on the instrument type and operating conditions. For most automotive failure analysis work, working resolution of 10 to 50 nanometres is sufficient to resolve the features of interest. In practice, the resolution achieved on a real sample depends on the sample condition, the accelerating voltage used, and the detector configuration. For most failure analysis work in automotive applications, working resolution of 10 to 50 nanometres is sufficient to resolve the features of interest. The magnification range that covers most automotive failure analysis work is from 50 times to 10,000 times. At 50 to 200 times, SEM provides overview imaging of fracture surfaces and corrosion zones that gives context before higher magnification is applied. At 500 to 2,000 times, the characteristic features of specific failure mechanisms become clearly visible: fatigue striations, cleavage facets, intergranular fracture paths, corrosion pit morphology. Above 5,000 times, fine microstructural features, nano-scale corrosion products, and the surface morphology of individual particles can be resolved.   Magnification Range     What It Shows Typical Application 20x to 200x Overview of fracture faces, corrosion zones, large defects Initial characterisation, failure site mapping 200x to 1,000x Fracture morphology, crack initiation sites, gross microstructural features Failure mechanism identification 1,000x to 5,000x Fatigue striations, cleavage facets, grain boundary details, corrosion pits Root cause determination, mechanism confirmation 5,000x to 20,000x Fine microstructural features, corrosion product morphology, thin film details Detailed mechanism analysis, corrosion characterisation 20,000x and above Nano-scale features, particle surface morphology, ultra-thin coating details Advanced characterisation, research-level analysis   SEM-EDX Combining Imaging with Elemental Analysis SEM imaging tells you what a feature looks like. Energy-dispersive X-ray spectroscopy (EDX), also written EDS, tells you what it is made of. The two techniques are routinely operated together, using the same electron beam in the same instrument, and together they are more powerful than either technique alone. When the primary electron beam interacts with the sample, it generates X-rays whose energies are characteristic of the elements present. Each element produces X-rays at specific, known energies: iron at 6.4 keV, aluminium at 1.49 keV, chlorine at 2.62 keV, and so on. The EDX detector measures the energy and intensity of these X-rays, producing a spectrum that identifies which elements are present and at what relative concentrations. In automotive failure analysis, SEM-EDX is applied in three primary ways. Point analysis targets a specific feature identified in the SEM image and produces an elemental spectrum for that location. This is used to identify a corrosion product, confirm the composition of an inclusion, or characterise a contaminating particle. Area analysis averages the elemental composition across a defined region of the sample, providing a bulk compositional snapshot. Elemental mapping uses the EDX signal to construct colour-coded maps showing where specific elements are distributed across the imaged area, revealing elemental gradients, segregation, and the spatial relationship between different phases or contamination layers. The combination of SEM morphological imaging and EDX elemental identification is the most information-dense single analytical step available in failure analysis. It simultaneously answers what happened and what it happened to. EDX does have limitations that experienced analysts account for. It is a surface technique with a sampling depth of approximately 1 to 2 micrometres at typical operating voltages. Quantification accuracy depends on sample geometry and is less precise for light elements (below sodium in the periodic table, including carbon, nitrogen, and oxygen) than for heavier elements. For definitive quantitative analysis of light elements or trace concentrations, EDX results are confirmed by complementary techniques such as FTIR for organic identification or ICP-MS for trace elemental quantification. For a deeper look at EDX elemental analysis and its role in failure investigation, see our dedicated EDX Analysis guide: /blog/edx-analysis/ Automotive Applications of SEM Analysis SEM analysis is applied across a wide range of failure scenarios in automotive manufacturing and service. The following are the most significant application areas in the context of ALS’s failure analysis work. Fracture and Fatigue Analysis Fracture surfaces are the primary domain of SEM in automotive failure analysis. The mechanism of a fracture leaves characteristic morphological signatures on the fractured faces, and SEM imaging at appropriate magnification reveals these signatures clearly. Fatigue fractures are identified by the presence of fatigue striations: closely spaced parallel marks that represent the crack front position at each load cycle. Striations are typically visible at magnifications of 1,000 to 5,000 times, and their spacing provides information about the crack growth rate per cycle. The initiation site of a fatigue crack is identifiable in the SEM image by the convergence of striation patterns and is typically associated with a stress concentration: a surface defect, a machining mark, a corrosion pit, or an inclusion. Brittle fracture modes leave different signatures. Cleavage fracture in crystalline metals produces flat, faceted fracture surfaces aligned with specific crystallographic planes, visible in SEM as bright, planar areas with characteristic river line patterns. Intergranular fracture, where the crack propagates along grain boundaries rather than through grains, produces a faceted surface where individual grain surfaces are visible. This mode is associated with grain boundary embrittlement from hydrogen absorption, temper embrittlement, or grain boundary corrosion. Ductile overload fracture produces a dimpled surface morphology at the microscale, where micro-voids nucleate at inclusions or particles and coalesce as the material deforms. The presence and size of dimples, and whether they are equiaxed or elongated, provides information about the stress state at fracture. Corrosion Characterisation SEM imaging characterises the morphology of corrosion damage in detail that cannot be achieved by optical microscopy. Pitting corrosion is identified by the hemispherical or crystallographic pit geometry and the presence of corrosion product deposits within and around the pits. The EDX spectrum of the corrosion products identifies the mechanism: chloride-rich corrosion products indicate chloride-induced pitting, sulfate-rich products indicate sulfuric acid attack, and the presence of zinc, chromate, or other coating elements indicates breakdown of the protective layer. Crevice corrosion, galvanic corrosion at bimetallic interfaces, and stress corrosion cracking all have distinctive SEM signatures. Stress corrosion cracking produces branched or transgranular crack morphology that SEM distinguishes clearly from mechanical fatigue. Cross-section SEM imaging of corroded surfaces shows the depth and morphology of the corroded zone, the integrity of any remaining coating, and the relationship between the corrosion front and the underlying microstructure. Contaminant and Particle Identification When foreign particles are found on automotive component surfaces, in hydraulic fluids, on electrical contacts, or on PCB surfaces, SEM-EDX provides the most direct path to identification. The morphology of a particle (rounded, angular, fibrous, platelet-shaped) narrows the candidate material types. The EDX elemental composition provides positive identification: an iron-rich angular particle is consistent with machining swarf, a silicon and oxygen-rich particle suggests a silicate mineral contaminant, a carbon-rich fibrous particle indicates organic fibre contamination. This combination of morphological and compositional information is essential for contamination source investigation. Identifying not just that contamination is present but where it likely originated from allows targeted corrective action in the manufacturing process. In cleanliness testing applications where particles are extracted from precision components and collected on filter membranes, SEM-EDX analysis of specific particles from the filter provides the particle identification data required by some OEM cleanliness specifications and by failure investigations where particle composition is central to the root cause. Coating and Surface Treatment Analysis SEM cross-section analysis is the primary tool for characterising the thickness, morphology, and integrity of coatings, platings, and surface treatments on automotive components. A properly prepared cross-section through a coated surface reveals each layer in the coating stack with nanometre-scale detail: the base material microstructure, the interface between base material and coating, each individual coating layer and its thickness uniformity, and any defects such as porosity, cracking, or delamination planes within the coating. EDX line scan analysis across the cross-section shows how the elemental composition transitions from one layer to the next, identifying the composition of each layer and detecting diffusion zones, interdiffusion effects, or contaminating species at layer interfaces. This is particularly relevant for investigation of adhesion failures, where the locus of failure (whether it occurred within a layer or at an interface) determines whether the failure is a coating process problem, a surface preparation problem, or a design problem. PCB and Automotive Electronics Failure Analysis Electronic components and PCB assemblies in automotive applications are subject to increasingly stringent reliability requirements, driven by the safety-critical nature of automotive control systems. SEM analysis is central to failure investigation in this domain. Solder joint failures are characterised by SEM to distinguish fatigue-driven cracking from brittle intermetallic fracture, from dewetting and non-wet opens caused by poor solderability. The fracture morphology and the composition of the solder and intermetallic layers identified by EDX provide the evidence to determine root cause. Corrosion and dendritic growth failures on PCB surfaces are investigated by SEM to characterise the morphology of the corrosion product and identify the ionic species responsible through EDX analysis. The distribution and density of corrosion sites across the board provides information about whether contamination was local or global, which guides the corrective action. For PCB ionic contamination analysis and chemical cleanliness investigation, see our Chemical and Electronics Testing services:  https://www.alstesting.co.th/anion-test-specialist-malaysia/ SEM vs Optical Microscopy & When to Use Each SEM and optical microscopy are complementary techniques. In a structured failure analysis investigation, both are used, with optical microscopy providing the initial characterisation and SEM providing the higher-resolution detail needed to reach a definitive conclusion.   Dimension Optical Microscopy SEM Analysis Maximum useful magnification    1,000x to 2,000x Up to 100,000x or higher Resolution 0.2 micrometres (diffraction limited) Typically 3 to 20 nm (varies by instrument/settings) Depth of field Low – challenging for rough fracture surfaces High – excellent for three-dimensional surfaces Colour imaging Yes – colour information from reflected light No – greyscale images only (BSE gives compositional contrast) Elemental analysis Not available Available via EDX – point, area, and map Sample preparation Minimal for most samples Coating required for non-conducting samples Throughput Fast – rapid overview imaging Slower – higher setup time per sample Best application Initial survey, large-area overview, surface colour assessment High-resolution characterisation, elemental identification, fine feature analysis Cost Lower per hour Higher per hour – more information per analysis   The practical workflow in failure analysis begins with stereo microscopy for large-area overview and failure site identification, moves to optical microscopy for initial characterisation at intermediate magnifications, and then applies SEM for the high-resolution imaging and EDX elemental analysis that establishes root cause. This sequence preserves the most informative analytical steps and ensures that SEM time is focused on the features that matter most. What SEM Analysis Cannot Do Understanding the limitations of SEM is as important as understanding its capabilities. SEM is an imaging and elemental analysis technique. It is not a molecular identification technique: it can tell you that a particle contains carbon, oxygen, and iron, but it cannot tell you whether the organic phase is a polyamide, a polyester, or an epoxy. For molecular identification of organic materials, FTIR spectroscopy is the appropriate complementary technique. SEM is also a surface technique. Without cross-section preparation, it analyses only the surface of the sample. Subsurface features, internal cracks, and through-thickness compositional gradients are not visible in surface SEM imaging without sectioning. For volumetric characterisation, techniques such as serial cross-section analysis or X-ray computed tomography (available at specialist facilities) are required. EDX quantification is more accurate for heavier elements than for light elements. Carbon, nitrogen, and oxygen are detectable but quantified with lower accuracy than elements from sodium and above in the periodic table. When precise quantification of light elements is required, complementary techniques including combustion analysis or carrier gas hot extraction are used. These limitations are not reasons to avoid SEM. They are reasons to use it as part of a structured, multi-technique failure analysis programme where each technique’s output builds on and is corroborated by the others. SEM Analysis at ALS Testing ALS Testing provides SEM and SEM-EDX analysis as part of our automotive failure analysis services. Our SEM capability covers the full range of applications described in this article: fracture and fatigue analysis, corrosion characterisation, contaminant and particle identification, coating cross-section analysis, and PCB and electronics failure investigation. All SEM analysis at ALS is conducted within our ISO/IEC 17025:2017 accredited quality management system, with documented equipment calibration, analyst qualification records, and sample traceability throughout. Our reports include representative SEM images with scale bars, magnification data, and operating conditions, supported by EDX spectra and maps where elemental characterisation is part of the investigation scope. Reports are formatted to support OEM submission, warranty dispute documentation, and technical engineering review. Our failure analysis team has experience across the full range of automotive materials and component types: metals, polymers, composites, coatings, adhesives, and electronics assemblies. When a failure reaches the SEM stage, we have the context and the technical depth to connect what we see in the image to what was happening in the manufacturing process or service environment. Summary Scanning electron microscopy is the central imaging tool of automotive failure analysis. It achieves magnifications and resolutions that optical microscopy cannot reach, with a depth of field that makes it uniquely suited to imaging the rough, three-dimensional surfaces of fractures and corrosion zones. When combined with EDX elemental analysis, it identifies not just the morphology of a failure feature but the material it involves. In automotive applications, SEM analysis is applied to fracture and fatigue investigation, corrosion characterisation, contaminant and particle identification, coating and surface treatment analysis, and PCB and electronics failure investigation. It is the technique that converts a visible failure into a defensible root cause conclusion, supported by documented images and data that hold up in OEM review, warranty proceedings, and regulatory submissions. Next Steps See our Failure Analysis services and full SEM capability overview:  https://www.alstesting.co.th/failure-analysis-services-sem-ftir-edx-als-testing/ Read our guide to EDX elemental analysis in failure investigation: /blog/edx-analysis/ For PCB and electronics failure analysis including ionic contamination: https://www.alstesting.co.th/anion-test-specialist-malaysia/ Contact our team to discuss a failure investigation: https://www.alstesting.co.th/contact-us/

At some point in the component qualification process, your OEM or customer will specify a cleanliness requirement. That requirement will reference one of two standards: ISO 16232 or VDA 19. If you have not worked with technical cleanliness testing before, the distinction between them is not immediately obvious. Both cover the same subject. Both are widely used in automotive manufacturing. And in practice, they are more aligned than their different names suggest. But the differences matter, and choosing the wrong standard for your submission can delay qualification or require retesting. This guide explains what each standard covers, how they relate to each other, and how to determine which one your specific application requires. Where ISO 16232 and VDA 19 Come From ISO 16232 is the international standard for technical cleanliness testing in road vehicles. It was developed by ISO Technical Committee 22, the body responsible for road vehicle standards, and is published in ten parts covering the full range of cleanliness test activities – from sampling strategy and extraction methods through to analysis and reporting. Because it is an ISO standard, it is adopted as the reference framework by most international OEMs and by testing laboratories operating outside Germany. VDA 19 is the equivalent German automotive industry standard, published by the VDA – the Verband der Automobilindustrie, the German Association of the Automotive Industry. It was developed by and for the German automotive industry, and reflects the cleanliness testing practices established by German OEMs over decades of precision component manufacturing. VDA 19 is published in two parts: Part 1 covers particle contamination analysis of functionally relevant automotive components, and Part 2 covers assembly environment requirements for technical cleanliness. The relationship between them is a deliberate harmonisation. VDA 19 Part 1 and ISO 16232 were aligned through a coordinated revision process, with the result that the two standards are technically equivalent for most cleanliness testing applications. The methods, particle extraction principles, classification logic, and analytical requirements are substantively the same. Where they differ is in specific reporting format details, particle classification notation, and the scope of Part 2 of VDA 19, which has no direct ISO equivalent covering assembly environment requirements. ISO 16232 and VDA 19 are harmonised standards covering the same testing discipline. Choosing between them is primarily a matter of which your OEM or customer specifies – not a choice between different test methods. What ISO 16232 and VDA 19 Cover ISO 16232 Structure and Scope ISO 16232 is organised as a single consolidated document covering all aspects of cleanliness testing. The key sections for most testing applications are: Part 5: Cleanliness inspection principles, covering inspection method selection, start parameters, cleaning mechanism parameters, and staff competency requirements. Part 6: Qualification testing and blank level determination, including routine inspection and double inspection protocols. Part 7: Extraction methods, covering preparatory and post-treatment steps, liquid extraction, and air extraction approaches. Part 8: Analysis filtration, defining the filtration method used to prepare extracted particles for examination. Part 9: Analysis methods, including Standard analysis, Extended analysis, and Shortened analysis, each suited to different testing scenarios. The full ISO 16232 framework provides a complete methodology from extraction through to reporting, applicable to any automotive component where cleanliness is a functional requirement. VDA 19 Structure and Scope VDA 19 Part 1 covers functionally equivalent ground to ISO 16232, with the same core methodology: extraction of particles from the component, gravimetric and light obscuration particle counting, microscopic classification, and cleanliness class assignment. The particle size ranges, classification categories, and reporting principles are aligned with ISO 16232. VDA 19 Part 2 is distinct. It addresses the assembly environment – the cleanliness requirements for the cleanroom or controlled environment in which precision components are assembled. It defines cleanliness classes for workspaces, tools, personnel, and packaging, providing a framework for controlling contamination introduction during the assembly process. ISO 16232 does not have an equivalent part covering assembly environments, which is why VDA 19 Part 2 remains in active use even among organisations whose component testing follows ISO 16232. Key Similarities and Differences For most cleanliness testing applications, the practical similarities between the two standards are more significant than their differences. The table below summarises the key dimensions.   Dimension ISO 16232 VDA 19 Origin International (ISO TC 22) German automotive industry (VDA) Technical equivalence Harmonised with VDA 19 Part 1 Harmonised with ISO 16232 Particle extraction methods Liquid: Pressure rinsing, Ultrasonic, Agitation, Internal rinsing.  Air: Air jet, Air through flow Liquid: Pressure rinsing, Ultrasonic, Agitation, Internal rinsing.  Dry: Air jet, Air through flow, Stamping, Suction Gravimetric analysis Standard analysis Standard analysis Light Obscuration Particle Counting (LPC) Shorten analysis Shorten analysis Microscopic particle classification Standard analysis Standard analysis Particle size ranges Particle size > 50 µm Particle size > 50 µm Particle classification types Metallic, non metallic, fibre Same categories Cleanliness class notation ISO cleanliness class format VDA cleanliness class format – slightly different notation Assembly environment Not covered Covered in VDA 19 Part 2 Report format ISO 16232 format VDA 19 format, different layout conventions Primary adopters Global OEMs, non-German automotive markets German OEMs and their Tier-1 supply chains   The notation difference in cleanliness class reporting is worth noting. Both standards define cleanliness classes based on particle counts per size range, but the way those classes are expressed in the test report differs between the two standards. If your OEM has specified a cleanliness requirement using VDA 19 notation, submitting a report in ISO 16232 format and vice versa can create confusion in the review process, even if the underlying analytical data is identical. Which Standard Applies to Your Situation? The straightforward answer: the standard that applies to your situation is the one your OEM or customer has specified. If the specification document, the purchase order, or the supplier quality requirement references VDA 19 – test to VDA 19 and report accordingly. If it references ISO 16232 – test to ISO 16232. Where the customer has specified both, which does happen in supply chains that cross between German and non-German OEM requirements, your laboratory will need to produce a report that addresses both frameworks. Where no specific standard is referenced, or where you are establishing a cleanliness specification for a new product rather than responding to an OEM requirement, the choice is more open. The following considerations are relevant. Choose ISO 16232 If… Your primary customers or OEM relationships are outside Germany – particularly Japanese, American, Korean, or UK-based OEMs You are testing to support ISO-referencing type approvals or international regulatory submissions Your laboratory scope or accreditation references ISO 16232 as the test method You are developing a cleanliness specification for a new component and want maximum international portability Choose VDA 19 If… Your customer is a German OEM or a Tier-1 supplier directly serving BMW, Volkswagen Group, Mercedes-Benz, Audi, Bosch, or ZF The supplier quality manual, PPAP requirements, or component specification explicitly references VDA 19 You are testing for assembly environment qualification as well as component cleanliness – VDA 19 Part 2 is the relevant standard for this Your existing cleanliness classification system uses VDA 19 notation and you need continuity across historical data sets When Both Apply Some Tier-1 suppliers serve multiple OEM relationships that span German and non-German customers. In this case, the same component may need to meet cleanliness requirements under both frameworks. Because the test methods are harmonised, a single test programme can produce data that satisfies both standards, provided the laboratory issues reports in the appropriate format for each customer requirement. Confirm this capability with your laboratory before proceeding, and provide both specification references when submitting your samples. Because ISO 16232 and VDA 19 are technically harmonised, a single set of test results can satisfy both standards. The difference lies in how the report is formatted and how the cleanliness class is expressed. A Note on Accreditation Regardless of which standard your cleanliness test is conducted to, the laboratory producing the results should be accredited to ISO/IEC 17025:2017. This accreditation is the foundation of credibility for your test data. It means that the methods, equipment, and quality system behind your results have been independently audited and verified. In practice, OEMs and procurement teams reviewing cleanliness test reports will look for the accreditation mark before they assess the results. A non-accredited report, however technically competent the laboratory, is not accepted as formal compliance evidence for OEM qualification, type approval, or regulatory submission purposes. ALS Testing is accredited to ISO/IEC 17025:2017. Our cleanliness testing capability covers both ISO 16232 and VDA 19, with reports formatted to the appropriate standard for each customer requirement. Our results are accepted by OEMs in more than 100 countries. Practical Checklist Before You Submit Samples for Cleanliness Testing Having the right information ready before sample submission helps your laboratory select the correct methods, format the report correctly, and avoid unnecessary follow-up. The following checklist covers the key points. Confirm the standard: identify whether the OEM or customer specification references ISO 16232, VDA 19, or both Confirm the cleanliness class requirement: obtain the specified cleanliness class or particle count limits from the specification document Confirm the component type and critical surfaces: identify which surfaces and channels need to be sampled Confirm the extraction method: some specifications define the required extraction method; if not, your laboratory will advise based on component geometry Confirm whether SEM-EDX particle identification is required: some OEM specifications require elemental identification of particles above a defined size. If required, confirm this capability with your laboratory at the enquiry stage. Confirm report format requirements: if your OEM requires a specific report format or data template, provide this to your laboratory before testing begins Package samples correctly: seal components in clean polythene bags immediately after manufacture to prevent post-manufacture contamination that would invalidate the test Summary ISO 16232 and VDA 19 are technically harmonised standards covering the same testing discipline: the extraction, quantification, and classification of particulate contamination from precision automotive components. The choice between them is driven primarily by your OEM requirement, not by any fundamental difference in the testing process. German OEMs and their direct Tier-1 suppliers will typically specify VDA 19. Global OEMs outside Germany will typically specify ISO 16232. Where both apply, the harmonised methods allow a single test programme to satisfy both frameworks with appropriate dual reporting. What matters most in both cases is that the testing is conducted by an ISO/IEC 17025 accredited laboratory with genuine specialist capability in technical cleanliness testing – the extraction methods, particle counting equipment, microscopic analysis, and reporting experience to produce results that your OEM will accept without qualification. Next Steps See our full Cleanliness and Particle Testing capability: https://www.alstesting.co.th/technical-cleanliness-testing/ Read our detailed guide to VDA 19 testing requirements: /blog/vda-19-guide/ Download our ISO 16232 test preparation checklist: /blog/iso-16232-checklist/ Contact our team to discuss your cleanliness testing requirements:  https://www.alstesting.co.th/contact-us/

If you are new to the automotive supply chain – or expanding into it – you will encounter the term automotive testing early and often. It appears in OEM qualification documents, supplier quality requirements, and regulatory submissions. It is referenced in purchase orders, quality plans, and audit checklists. But what does it actually mean, and why does it carry so much weight? This guide answers both questions. It covers what automotive testing is, the main categories it encompasses, how it fits into the manufacturing lifecycle, and what separates a test that gives you confidence from one that simply gives you a result. The Definition of Automotive Testing Automotive testing is the systematic evaluation of materials, components, sub-assemblies, and complete vehicle systems against defined specifications. Those specifications may be set by an OEM, a regulatory body, an international standards organisation such as ISO or IEC, or a combination of all three. The goal is verification. Testing establishes, with documented evidence, that a product does what it is supposed to do, under the conditions it will actually encounter, at the level of precision the application requires. For a hydraulic valve in a transmission, that means cleanliness down to the micron level. For an interior trim panel, it means VOC emissions within prescribed limits. For a PCB in a safety-critical control unit, it means ionic contamination below the threshold that triggers corrosion or leakage current. Automotive testing is not the same as general product testing. The standards are more demanding, the traceability requirements are stricter, and the consequences of getting it wrong are more severe. That is why the framework around it – accreditation, methodology, and documentation – exists in the form it does. Automotive testing is verification with consequences. It is the documented evidence that sits between a supplier’s claim and an OEM’s acceptance. The Main Types of Automotive Testing Automotive testing covers a wide range of disciplines. In practice, most suppliers will engage with several of these over the course of a product’s lifecycle. Understanding the landscape helps you identify what your specific situation requires. Technical Cleanliness Testing Cleanliness testing quantifies the particulate contamination present on or within a precision automotive component. It is governed by ISO 16232 and VDA 19 – the international and German automotive industry standards respectively – and produces a cleanliness class: a formal rating that can be compared directly against the cleanliness specification defined by the OEM or component designer. Cleanliness matters because particles that are invisible to the eye can cause catastrophic failures in hydraulic systems, fuel systems, and braking systems. A single metallic particle of the wrong size in the wrong place can jam a valve, block an orifice, or score a precision-ground surface. For EV platforms, the cleanliness requirements of battery thermal management circuits and power electronics cooling paths are equally stringent. The process involves particle extraction from the component, gravimetric analysis to determine total particle mass, light obscuration particle counting to establish size distribution, and in some cases SEM-EDX analysis to identify particle composition. This is specialist work – not every laboratory offers it to the depth that OEM qualifications require. See our Cleanliness and Particle Testing services for ISO 16232 and VDA 19 capability details. https://www.alstesting.co.th/technical-cleanliness-testing/ Failure Analysis Failure analysis is the forensic investigation of a component that has failed – in production, in qualification testing, or in the field. The objective is root cause: not just identifying what failed, but tracing the failure back to its physical, chemical, or mechanical origin. The core techniques are scanning electron microscopy (SEM) for high-magnification surface and fracture imaging, energy-dispersive X-ray spectroscopy (EDX) for elemental identification, FTIR spectroscopy for organic material identification, and metallurgical cross-section preparation for internal microstructural analysis. These techniques are applied in combination, following the failure evidence from the macro scale down to the micro and nano scale. Failure analysis is applied at every stage of the automotive lifecycle: during development to catch design or material weaknesses early, during qualification when unexpected test failures must be explained, during production to prevent recurrence of non-conformances, and after field returns to determine warranty liability and drive product improvement. Materials and Environmental Testing This category covers two related but distinct disciplines. Materials testing evaluates the chemical composition and performance properties of automotive materials – plastics, rubbers, foams, adhesives, coatings, metals, and composites. Environmental testing exposes components and materials to simulated real-world conditions – temperature extremes, humidity, corrosion, UV exposure, vibration – to assess durability and stability. Key standards in this area include VDA 278 and ISO 12219 for VOC and semi-volatile organic emissions from interior materials, ISO 9227 and ASTM B117 for salt spray corrosion testing, and the IEC 60068 series for thermal shock and environmental simulation of automotive electronics. These tests support material qualification, OEM specification compliance, and regulatory approval across interior and exterior component categories. Full capability details are available on our Automotive Materials and Environmental Testing page at  https://www.alstesting.co.th/automotive-materials-environmental-testing-als-testing/ Chemical and Electronics Testing Chemical testing in automotive applications covers two converging areas. The first is trace chemical analysis of materials and components: identifying and quantifying organic compounds, trace elements, restricted substances, and ionic contaminants using techniques including GCMS, ICP-MS, FTIR, and ion chromatography (IC). The second is electronics-specific chemical testing, which has grown significantly as vehicle architectures shift toward electronics-intensive platforms. This includes ionic contamination testing of PCB assemblies by IC to IPC-TM-650, anion and cation analysis of flux residues and process chemical contamination, RoHS restricted substance screening to IEC 62321, and REACH SVHC screening for hazardous chemical content. Ion chromatography – the basis of what is often called the anion test – is increasingly critical for automotive electronics manufacturers. It detects the anionic species that drive corrosion and leakage current failures in PCB assemblies: chloride, fluoride, sulfate, nitrate, phosphate, and organic acid anions from flux residues. How Automotive Testing Fits the Manufacturing Lifecycle Testing is not a single event at the end of a production run. In a well-structured quality system, it is integrated throughout the manufacturing lifecycle, with different test types serving different purposes at each stage. Material and Supplier Qualification Before a material or sub-component enters production, it needs to be qualified against the OEM specification. This typically involves a defined test programme covering chemical composition, mechanical performance, emissions, and where relevant, cleanliness. Qualification testing establishes the baseline – the evidence that the material or component, as supplied, meets the defined requirements. This is predominantly third-party laboratory work, because OEMs require accredited results. Prototype and Development Testing During development, testing is used iteratively. A material is selected, tested, modified based on results, and tested again. Failure analysis at this stage investigates unexpected results and guides design changes. The goal is to resolve weaknesses before they become production problems, when the cost of correction is manageable. Production Quality Control Once production is established, routine testing monitors process stability and product consistency. This is often a combination of in-house QC – simple checks that verify the process is running within limits – and periodic third-party testing to maintain the documented evidence of compliance. The frequency and scope of third-party testing during production is typically defined by the OEM or the quality plan. Field Failure Investigation When components fail in service, failure analysis traces the failure to its cause. This determines whether the failure represents a design defect, a manufacturing escape, a misapplication, or a warranty claim that is outside the supplier’s scope. The findings drive corrective action and, in more serious cases, inform recall or field campaign decisions. At this stage, the independence and accreditation of the laboratory producing the analysis matters significantly – both for the technical credibility of the conclusions and for their use as evidence in commercial or legal contexts. Destructive vs Non-Destructive Testing One practical distinction that matters when planning a test programme is whether the testing is destructive or non-destructive. Destructive testing involves irreversible analysis. Cross-section preparation, chemical extraction, mechanical fracture testing – these all consume the sample. The benefit is that they yield the most detailed information about a component’s internal structure, material composition, and failure mechanism. The trade-off is that the tested sample cannot be returned to service or reused. Non-destructive testing (NDT) allows a component to be evaluated and returned. Techniques such as SEM surface imaging, particle extraction (which does not damage the component structure), and X-ray inspection fall in this category. NDT is preferred where sample numbers are limited – for example, with prototype components or field returns where no duplicate is available. In practice, a failure analysis investigation will often begin with non-destructive examination and progress to destructive techniques as the evidence trail narrows. The sequence is planned in advance to preserve the most informative analytical options. Why Independent, Accredited Testing Matters It is worth being direct about this. Not all testing is equal, and the difference between testing conducted by an ISO/IEC 17025 accredited independent laboratory and testing conducted in-house has concrete consequences. ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. Accreditation to this standard means that a laboratory’s methods, equipment calibration, analyst qualifications, and quality management system have been audited and verified by an independent accreditation body. The ILAC MRA – the Mutual Recognition Arrangement administered by the International Laboratory Accreditation Cooperation – extends this recognition globally, so that accredited results from a laboratory in Malaysia are accepted by OEMs and regulators in Europe, North America, and Japan without question. There are three reasons this matters in practice. OEM acceptance: the vast majority of global OEMs require accredited test data for qualification submissions, type approvals, and compliance evidence. In-house data, regardless of how it was generated, is generally not accepted for these purposes. Liability protection: an independent test report provides documented, objective evidence of compliance at the time of manufacture. This evidence is critical when warranty claims, product liability disputes, or regulatory investigations arise. An independent report protects suppliers from unjustified claims. Objectivity: an independent laboratory has no stake in the outcome. It reports what it finds. For any test result that will be used in a formal context – OEM submission, regulatory filing, legal proceedings – this independence is not optional. ALS Testing is accredited to ISO/IEC 17025:2017, with results recognised under the ILAC MRA in more than 100 countries. Our test reports carry the formal ILAC MRA mark and are accepted by OEMs and regulatory authorities worldwide. The laboratory you choose to partner with has direct consequences for your OEM relationships, your regulatory posture, and your ability to respond to quality issues with credible evidence. Choosing the Right Laboratory for Automotive Testing With multiple testing laboratories operating in Malaysia and across Southeast Asia, choosing the right partner requires more than a price comparison. A few dimensions worth evaluating: Accreditation scope: confirm that the specific tests you require are within the laboratory’s accredited scope, not just offered as unaccredited services. The distinction matters for OEM and regulatory submissions. Specialist capability: some test types – particularly cleanliness testing to ISO 16232 and VDA 19, and advanced failure analysis using SEM, FTIR, and EDX – require specialist equipment and methodological expertise that not every general testing laboratory has invested in. Understanding of automotive context: raw analytical data has limited value without interpretation in the context of your manufacturing process and OEM specification. A laboratory that understands automotive manufacturing can tell you not just what the results show, but what they mean for your quality programme. Turnaround and communication: production schedules and OEM submission deadlines are real constraints. A laboratory that communicates proactively from sample receipt through to report delivery reduces the risk of delays cascading into production or commercial consequences. ALS Testing combines ISO/IEC 17025 accreditation, specialist cleanliness and failure analysis capability, and 40 years of global testing network experience with deep local knowledge of the Malaysian and Southeast Asian automotive market. Ready to Discuss Your Testing Requirements? Whether you are qualifying a new component for an OEM programme, investigating a failure, or establishing a testing protocol for a new material or platform, ALS Testing’s specialists are here to help. See the full range of ALS automotive testing services:  https://www.alstesting.co.th/automotive-testing-services-als-testing-laboratory/ Contact our team for a quotation or technical consultation:  https://www.alstesting.co.th/contact-us/

C3 (Critical Cleanliness Control®) — The Next Level of PCB Cleanliness Testing ALS Testing Services (Thailand) Co., Ltd.  New Service Special Offer : 2,000 baht (Regular Price: 3,000 baht)   ️ Promotional Details — Limited Time Offer  ALS is proud to offer C3 testing at a special introductory price: Regular Price Promotional Price C3 Testing Service ฿3,000 ✅ ฿2,000 ️ Promotion Period: May 15 – August 14, 2026 (Limited-time offer — secure your slots early!) The Hidden Threat on Every PCB In today’s electronics manufacturing landscape, cleanliness is not just a matter of aesthetics — it is a fundamental quality and reliability requirement. Every printed circuit board (PCB) that passes through a production line is exposed to a wide range of potential contaminants: flux residues, ionic salts, process chemicals, airborne particulates, moisture, and even fingerprint oils from human handling. What makes this especially dangerous is that many of these contaminants are invisible to the naked eye. A PCB may look perfectly clean under normal inspection — yet still carry enough ionic contamination to cause field failures months or years down the line. The consequences of neglecting PCB cleanliness can be severe: ️ Moisture absorption by residual ionic salts ⚙️ Electrochemical corrosion of copper traces and solder joints ️ Electromigration and dendritic growth — microscopic conductive bridges forming between circuit traces ⚡ Leakage currents and short circuits  Complete board failure — often unpredictable and difficult to trace in the field This is why cleanliness testing is no longer optional — it is a critical step in any robust quality assurance and reliability program. What Is C3 (Critical Cleanliness Control®)? C3 (Critical Cleanliness Control®) is a state-of-the-art, localized ionic cleanliness testing technology designed specifically to address the limitations of traditional cleanliness measurement methods. At its core, C3 works by using ultra-pure deionized water as an extraction medium. A precisely controlled volume of water is applied to a specific, targeted area of the PCB surface. The water extracts ionic contaminants from that localized zone, and the resulting solution is then analyzed by measuring its electrical conductivity and resistance. From these measurements, the instrument calculates the Corrosivity Index (C.I.) — a standardized indicator of contamination level and potential corrosion risk. The fundamental principle is elegant in its simplicity: The more ionic contamination present, the higher the electrical conductivity of the extract → the higher the C.I. value → the greater the risk. Conversely: ✅ Low C.I. = Clean PCB = Low corrosion risk = Reliable product The Science Behind Ionic Contamination To fully appreciate the value of C3 testing, it is important to understand why ionic contamination is so harmful at a fundamental level. What Are Ionic Contaminants? Ionic contaminants are electrically charged chemical species (ions) — both positively charged cations (e.g., Na⁺, K⁺, Ca²⁺) and negatively charged anions (e.g., Cl⁻, Br⁻, SO₄²⁻) — that remain on the PCB surface after manufacturing. Common sources include: Contamination Source Typical Ionic Species Solder flux residues Organic acids, halide activators (Cl⁻, Br⁻) Human handling NaCl (sodium chloride) from perspiration Process water Calcium, magnesium, chloride ions Atmospheric dust Mixed ionic salts Cleaning agent residues Surfactant ions, alkaline species PCB substrate outgassing Various organic ionic compounds ⚠️ The Electrochemical Failure Mechanism When ionic contaminants combine with moisture — even at normal ambient humidity levels — they form a thin electrolytic film on the PCB surface. In the presence of an applied electric field (i.e., a powered circuit), this sets off a chain of electrochemical reactions: Ionic contamination+H2O+Electric field→Electrochemical corrosion+Dendritic growthIonic contamination+H2​O+Electric field→Electrochemical corrosion+Dendritic growth Dendritic growth (also called electrochemical migration or ECM) is particularly insidious: metallic ions dissolved from corroding conductors are redeposited as branching, tree-like conductive filaments that can bridge adjacent circuit traces, causing intermittent or permanent short circuits. These failures are notoriously difficult to diagnose after the fact. Traditional Testing vs. C3 — Understanding the Difference ❌ Traditional Methods: ROSE Testing (Resistivity of Solvent Extract) For decades, the industry relied primarily on ROSE (Resistivity of Solvent Extract) testing — standardized under IPC-TM-650 Method 2.3.25 — as the go-to cleanliness measurement. In ROSE testing, the entire PCB is immersed in a mixture of isopropyl alcohol (IPA) and deionized water, and the total ionic contamination of the whole board is measured. While ROSE testing provides a useful global cleanliness benchmark, it has well-recognized limitations: ❌ It gives only a board-average result — it cannot identify where contamination is located ❌ High-risk localized zones (e.g., beneath dense IC packages) may have dangerous contamination levels that are diluted and masked by cleaner areas elsewhere on the board ❌ It cannot be performed on boards with components or coatings already applied ❌ Results are not spatially resolved — they provide no actionable guidance for process engineers ✅ C3: The Localized, Targeted Solution C3 was developed precisely to overcome these limitations. Rather than flooding the entire board, C3 applies its extraction water to a precisely defined, small area — as small as a few square centimeters — enabling point-by-point contamination mapping of the PCB surface. Feature ROSE / Traditional Testing C3 (Critical Cleanliness Control®) Testing Area Entire board (global average) Specific localized zones Spatial Resolution None High — point-by-point mapping Under-component testing ❌ Not possible ✅ Capable (QFN, BGA, etc.) Non-destructive ✅ Yes ✅ Yes Speed Moderate ⚡ Rapid — near-immediate results Process trend monitoring Limited ✅ Full C.I. trend tracking Actionability Low High — identifies specific problem areas   Key Advantages of C3 Testing 1. Localized, Targeted Testing Unlike global testing methods, C3 allows engineers to test exactly where it matters most — directly beneath high-density IC packages, in solder joint crevices, around connector interfaces, or any zone identified as high-risk. This targeted approach dramatically increases the sensitivity and relevance of the contamination data. 2. ⚡ Rapid, Real-Time Results C3 delivers results almost immediately after sample extraction. This makes it ideal for in-line or at-line quality control, enabling rapid feedback during production rather than waiting for lengthy laboratory turnaround times. 3. Fully Non-Destructive The C3 extraction process uses only ultra-pure water and causes zero physical or electrical damage to the PCB, its components, solder joints, or surface finishes. The tested board can proceed normally through the production process or be returned to the customer without any impact on its integrity. 4. Process Trend Monitoring and SPC Integration Because C3 generates quantitative C.I. data for specific locations, it is perfectly suited to Statistical Process Control (SPC) integration. Engineers can plot C.I. values over time to: Identify process drift before it causes failures Evaluate the effectiveness of cleaning process changes Establish and maintain cleanliness control limits Generate compliance documentation for customers and auditors 5. Hidden Zone Inspection (Under-Component Testing) One of the most powerful capabilities of C3 is its ability to assess contamination beneath components — including low-standoff packages such as QFN (Quad Flat No-Lead) and BGA (Ball Grid Array) devices, where conventional inspection is physically impossible. This is increasingly critical as component miniaturization continues and the standoff gap between package and PCB becomes ever smaller. Applications Across the Electronics Manufacturing Lifecycle C3 is a versatile tool applicable at multiple stages of PCB fabrication, assembly, and quality assurance: ✔️ 1. Post-Soldering Cleanliness Verification After wave soldering, reflow soldering, or selective soldering operations, flux residues — especially from no-clean flux formulations — may remain on the PCB surface. C3 provides a quantitative measure of residual ionic contamination, enabling engineers to determine whether cleaning is required or whether the no-clean residues are within acceptable limits. ✔️ 2. Pre-Conformal Coating Inspection Conformal coating is applied to protect PCBs in harsh environments (humidity, chemicals, vibration). However, if ionic contamination is present beneath the coating, moisture can penetrate and trigger under-coating corrosion and delamination, causing the coating to fail. C3 testing before coating application ensures that the substrate is clean and that the coating will perform as intended. ✔️ 3. In-Line Production Quality Control C3 can be integrated into the production quality control workflow as a routine check at defined process stages. By monitoring C.I. values at regular intervals, manufacturing teams can maintain consistent cleanliness standards and rapidly detect when a process step (e.g., a solder paste applicator, a flux dispensing system, or a cleaning machine) begins to drift out of specification. ✔️ 4. PCB Failure Analysis (FA) When a PCB is returned from the field due to a reliability failure, C3 is an invaluable tool in the failure analysis process. By mapping the contamination profile of specific areas on the failed board — and comparing it against reference (non-failed) boards — engineers can determine whether ionic contamination played a role in the failure and identify its likely source. ✔️ 5. Cleaning Process Validation and Optimization When introducing or validating a new cleaning chemistry, cleaning machine, or cleaning process parameter, C3 provides the quantitative data needed to confirm that the process effectively removes contamination from all critical zones, including those beneath low-standoff components. ✔️ 6. Incoming Material and Bare Board Inspection C3 can also be applied to bare PCB substrates and incoming solder paste or flux materials to verify their ionic contamination levels before they enter the production line — preventing contamination from being introduced at the very start of the manufacturing process. Understanding the Corrosivity Index (C.I.) The primary output of C3 testing is the Corrosivity Index (C.I.), a dimensionless numerical value derived from the electrical conductivity measurement of the extraction solution. The C.I. provides a direct, standardized, and comparable measure of ionic contamination for any tested location. C.I. Interpretation Guide: C.I. Value Range Cleanliness Status Risk Level Recommended Action Low ✅ Excellent — PCB is clean Very Low No action required; approve for next process Moderate ⚠️ Acceptable — minor contamination Low–Medium Monitor trend; review process High ❌ Contamination detected High Investigate source; consider re-cleaning Very High ❌❌ Heavy contamination Critical Do not proceed; immediate corrective action  Note: Specific C.I. acceptance thresholds should be established based on the end-use application, customer requirements, and applicable industry standards (e.g., IPC-7711/7721, IPC-6012, IPC-A-610). Industry Standards and Regulatory Context The importance of PCB cleanliness is recognized and mandated by major international electronics industry standards: IPC-7711/7721 — Rework, Modification and Repair of Electronic Assemblies IPC-6012 — Qualification and Performance Specification for Rigid Printed Boards IPC-A-610 — Acceptability of Electronic Assemblies IPC-TM-650 2.3.25 — Ionic Cleanliness Testing J-STD-001 — Requirements for Soldering Electrical and Electronic Assemblies MIL-PRF-31032 / MIL-P-55110 — Military specifications for PCB reliability C3 testing supports compliance with these standards by providing the localized, quantitative, and traceable cleanliness data that global testing methods cannot supply. Contact Us For inquiries, quotations, and sample submissions, please contact our Marketing Team: +66 94 480 4705 +66 94 480 4706 +66 83 858 1323 ➡️ Click here to view full promotion details

Cross-Sectional Analysis for Electronic Devices: Seeing What the Naked Eye Can’t When the Real Problem Is Hidden Inside In electronics manufacturing, the most critical defects are often the ones you can’t see. A hairline crack in a solder joint, a void in a plating layer, an invisible delamination between PCB layers — any of these can cause a device to fail unpredictably in the field, with consequences ranging from product recalls to safety incidents. Cross-sectional analysis is the technique that makes the invisible visible. By physically sectioning a component and examining its internal structure with precision instruments, engineers gain access to information that no surface inspection can provide — and that information is often the difference between a reliable product and an expensive failure. What Is Cross-Sectional Analysis — and Why Does It Matter? Cross-sectional analysis involves preparing a material or device specimen by cutting, mounting, and polishing it to reveal a precise internal cross-section, then examining that section under high-powered microscopy. It’s routinely applied to PCBs, PCBAs (assembled boards), integrated circuits (ICs), and a wide range of other electronic and industrial components. The Five Core Objectives Table Objective What It Delivers  Defect Detection Identifies incomplete connections, solder defects, and structural flaws before they cause failures in the field  Material Quality Assessment Evaluates layer thickness, density, mechanical strength, and durability — informing better material selection decisions  Failure Analysis Traces the root cause of device failures with scientific precision, not guesswork  Product Development Reveals weaknesses in current designs and provides the data needed to build better, more reliable products  Cost Reduction Catching defects early in production is dramatically cheaper than recalls, rework, or warranty claims downstream Step-by-Step: The Cross-Sectional Analysis Process Reliable results depend on rigorous, standardized preparation. Here’s how the process unfolds at ALS: Stage 1: Sample Preparation Document the sample Before any cutting begins, the specimen is photographed in full — capturing the overall condition and the specific area of interest. This creates a visual baseline for the entire analysis. Precision cutting The specimen is cut using specialized equipment, maintaining a minimum distance of 1.0 cm from the region of interest to avoid cutting-induced damage. If the area is particularly sensitive, the sample is pre-mounted in epoxy resin to protect it during sectioning. Ultrasonic cleaning The cut specimen is cleaned in an ultrasonic bath for 2–3 minutes, then thoroughly dried — removing any debris or contamination that could affect imaging quality. Stage 2: Mounting (Casting) The specimen is embedded in a precisely measured mixture of epoxy resin and hardener, cast into a mold that holds it securely in the correct orientation. Once fully cured, the mounted sample is carefully removed from the casting cup. The casting cup is cleaned with IPA-soaked cloth after each use to remove cured resin residue — maintaining consistent mounting quality across samples. ✨ Stage 3: Grinding and Polishing The mounted specimen is processed on a NANO 1000T Grinder-Polisher, working through progressively finer abrasives at controlled speeds until the cross-section surface is perfectly flat, smooth, and ready for microscopic examination. Stage 4: Microscopic Analysis Optical Microscopy Using a high-performance optical microscope at magnifications ranging from 10× to 500× (selected based on sample characteristics), the cross-section is systematically imaged and examined for visible defects, layer integrity, and structural anomalies. SEM/EDX Analysis For deeper investigation, Scanning Electron Microscopy (SEM) provides nanometer-level resolution imaging of internal structures, while Energy Dispersive X-ray Spectroscopy (EDX) identifies the elemental composition of specific areas — revealing not just where a problem exists, but what it’s made of. Stage 5: Reporting Analysis data — including images, measurements, and compositional findings — is compiled into a comprehensive report. Results are presented with supporting graphics, charts, and clear scientific interpretation, making findings accessible to both technical and non-technical stakeholders. The Technical Toolkit: Key Analysis Techniques   Optical Microscopy Uses visible light to generate high-resolution images at the micrometer scale. The standard first step for examining solder joint quality, layer continuity, and surface-level defects in PCBs and electronic assemblies. ⚡ Electron Microscopy (SEM & TEM) Replaces light with a focused electron beam to achieve nanometer-scale resolution — far beyond what optical microscopy can deliver. Essential for studying particle morphology, interface characteristics, and fine structural details that affect electrical and mechanical performance. ️ Metallographic Analysis Chemical etching techniques are applied to reveal grain boundaries, phase distributions, and internal microstructure in metallic materials — enabling detailed assessment of structural continuity and micro-level defects. Hardness Testing (Vickers / Rockwell) Quantifies the mechanical properties of materials at the cross-section — including hardness, wear resistance, and strength — providing critical data for quality certification and material performance evaluation. X-ray Analysis (XRD & XRF) XRD (X-ray Diffraction) — Reveals crystal structure and phase composition of materials XRF (X-ray Fluorescence) — Identifies elemental composition and detects contamination or impurities Together, these techniques provide a complete chemical and structural picture of the material under investigation. What Materials and Applications Can Cross-Sectional Analysis Examine?       Cross-sectional analysis is far more versatile than many realize. Beyond electronics, it has applications across virtually every field of materials science and engineering: ️ Electronic Materials PCBs — Detecting soldering defects, delamination, via integrity issues, and layer thickness non-conformance Electronic components — Capacitors, resistors, and ICs: internal structural assessment and material integrity verification Metallic Materials Metal alloys — Examining crystal structure, elemental distribution, and internal defects such as cracks or incomplete fusion Industrial materials — Evaluating mechanical properties and wear resistance of steel and aluminum for structural and machinery applications Chemical and Polymer Materials Plastics and polymers — Analyzing internal structure, additive distribution, strength, and flexibility characteristics Ceramic materials — Assessing internal structure, fracture resistance, and impact strength for industrial ceramic applications Medical and Biomedical Research Biological tissue — Studying cellular architecture, comparing cancerous and healthy cells, and evaluating tissue response to treatment Vaccines and pharmaceuticals — Examining structural composition to assess formulation stability and efficacy Social Sciences Cross-sectional studies — Collecting population-level data at a single point in time to analyze factors influencing health outcomes, behaviors, and demographic trends — providing foundational data for longitudinal research Why Choose ALS for Cross-Sectional Analysis? ALS Testing combines state-of-the-art instrumentation — including high-performance optical microscopes, SEM/EDX systems, and precision grinding equipment — with years of hands-on expertise in electronics failure analysis and materials characterization. Our ISO/IEC 17025 accredited laboratory ensures that every analysis is conducted to the highest international standards, with results that are scientifically defensible, clearly communicated, and ready to support your quality decisions. Whether you’re investigating a field failure, validating a new manufacturing process, or developing the next generation of electronic products, cross-sectional analysis with ALS gives you the internal insight you need to get it right. Contact ALS Testing Services (Thailand) ALS Testing Services (Thailand) Co., Ltd. Advanced chemical analysis and materials testing — powered by modern technology and specialist expertise.  Tel: +(66) 2700 9665  Email: pathumthani@alsglobal.com When surface inspection isn’t enough — cut deeper with ALS. Contact our team today to discuss your cross-sectional analysis requirements.

Volatile Organic Compounds (VOCs): What They Are, Why They Matter, and How to Measure Them The Invisible Chemicals Around Us They’re in the paint on your walls, the fuel in your car, the cleaning products under your sink — and quite possibly, the air you’re breathing right now. Volatile Organic Compounds (VOCs) are a family of chemicals so pervasive that most people encounter them daily without realizing it. VOCs are liquid or solid chemical compounds with low boiling points, meaning they evaporate easily at room temperature and enter the air we breathe. While some are relatively harmless, others pose serious risks to human health and the environment — making accurate detection, measurement, and control essential for industries, regulators, and communities alike. Meet the Key Players: Common Types of VOCs Benzene A colorless aromatic hydrocarbon found in petrol, diesel, paints, and solvents. Benzene is classified as a known human carcinogen, with established links to leukemia and damage to the nervous system. Even low-level, long-term exposure carries significant health risks. Formaldehyde A colorless, pungent gas that dissolves readily in water. Widely used in wood-based manufacturing (plywood, particleboard) and household cleaning products, formaldehyde causes respiratory irritation, eye and skin reactions, and is associated with increased cancer risk with prolonged exposure. Toluene A benzene-like hydrocarbon with an added methyl group, found in petrol, solvents, and paints. Exposure to toluene can cause dizziness, headaches, and neurological impairment — particularly in poorly ventilated environments. Xylene A hydrocarbon with two methyl groups, used extensively in paint production, solvents, and fuels. Xylene exposure affects the eyes, respiratory system, and nervous system, and can be especially hazardous in occupational settings. Where Do VOCs Come From? VOC emissions come from a surprisingly wide range of sources — both natural and human-made: Natural Sources Decomposing organic matter — When plants and animals break down, bacteria release VOCs such as methane and ethylene as byproducts Natural seepage — Petroleum deposits and geothermal activity can release VOCs naturally into the atmosphere Combustion Sources Industrial fuel burning — Power generation, manufacturing facilities, and industrial boilers burning oil, coal, or gas release significant VOC emissions Vehicle exhaust — Fossil fuel-powered vehicles are a major source of urban VOC pollution, contributing to smog formation and air quality degradation Industrial Sources Manufacturing processes — Production of paints, solvents, rubber, plastics, and specialty chemicals involves extensive use of VOCs Industrial operations — Equipment cleaning, maintenance, and chemical handling all generate VOC releases that must be carefully managed Everyday Sources Household products — Wall paints, cleaning agents, bleaches, fuels, and dry-cleaning fluids all contain VOCs that off-gas into indoor air Home appliances — Printers, air conditioners, and other devices can emit low levels of VOCs during operation           The Health Impact: What VOC Exposure Does to the Body Table Health Effect Symptoms & Consequences ️ Irritation Eye, nose, and throat irritation — often the first sign of exposure  Respiratory problems Breathing difficulties, airway constriction, worsening of asthma  Neurological effects Dizziness, confusion, insomnia, and memory impairment ⚠️ Cancer risk Certain VOCs (notably benzene) are classified carcinogens with documented links to leukemia Environmental Consequences: Beyond Human Health VOCs don’t just affect people — they damage the world around us: Air Quality VOCs react with nitrogen oxides in sunlight to form photochemical smog — the hazy, harmful air pollution common in urban areas. This ground-level ozone damages respiratory systems and reduces visibility. Water Quality When VOCs enter water bodies through spills or runoff, they become toxic to aquatic life — disrupting ecosystems and contaminating drinking water sources. Soil Quality VOCs that leach into soil inhibit plant growth and degrade soil health, with long-term consequences for agriculture and natural ecosystems in contaminated areas. Controlling VOC Emissions: A Multi-Layer Approach 1. Standards and Legislation Thailand has established regulatory limits for key VOCs in ambient air — for example: Benzene: ≤ 1.7 µg/m³ annually Vinyl Chloride: ≤ 10 µg/m³ annually The Pollution Control Department enforces industry-specific VOC emission limits, backed by legally binding regulations. 2. Monitoring and Reporting Continuous air quality monitoring in high-risk zones — near industrial facilities and fuel storage sites — tracks VOC levels in real time Industry self-auditing ensures ongoing compliance and transparency in emissions reporting ⚙️ 3. Source Control Vapor recovery systems at fuel storage facilities and service stations capture VOC emissions before they escape into the atmosphere Process optimization in manufacturing reduces VOC usage and improves efficiency — achieving the same output with lower chemical inputs 4. Public Awareness and Participation Community education on VOC risks and safe product use empowers people to reduce personal exposure Environmental governance frameworks that include public participation create shared accountability for air quality in communities   How VOCs Are Measured: The Science of Detection Accurate VOC measurement is the foundation of effective control — and the methods vary depending on whether you’re testing air, water, or soil. VOC Measurement in Air Sample Collection Air samples are collected using adsorption tubes or continuous sampling systems, where VOCs are captured at low temperatures onto an adsorbent material for later analysis. Key Technologies: Table Technology How It Works PID (Photoionization Detector) Uses a UV lamp to ionize organic gases, enabling rapid real-time concentration measurements in the field GC-MS (Gas Chromatography–Mass Spectrometry) Separates and identifies individual VOC compounds with high precision — the gold standard for laboratory air analysis   Result: Real-time concentration data that enables immediate response to pollution events and supports regulatory compliance monitoring. VOC Measurement in Water Sample Collection Water samples are collected in sealed, airtight containers to prevent evaporation during transport to the laboratory — a critical step that preserves sample integrity. Key Technologies: Table Technology How It Works GC-MS Analyzes VOCs in water after sample preparation (e.g., salting out to concentrate compounds) for precise identification and quantification HSGC (Headspace Gas Chromatography) Forces dissolved VOCs to volatilize into the headspace above the sample, then analyzes the vapor — ideal for water matrices Result: Accurate VOC concentration data essential for drinking water safety assessments and environmental compliance monitoring. VOC Measurement in Soil Sample Collection Soil samples are collected from multiple locations and sealed immediately in airtight containers to minimize VOC loss through evaporation — maintaining the reliability of results. Key Technologies: Table Technology How It Works SPE (Solid Phase Extraction) Isolates and purifies VOC compounds from the soil matrix before analysis GC-MS Identifies and quantifies VOC contaminants in soil with high sensitivity and specificity Result: Soil VOC data enables comprehensive environmental risk assessment — particularly critical for sites with a history of industrial activity, fuel spills, or chemical contamination. Why Professional VOC Analysis Matters Whether you’re an industrial operator managing emissions compliance, an environmental consultant assessing a contaminated site, or a manufacturer verifying product safety, accurate VOC analysis requires both sophisticated instrumentation and experienced scientific interpretation. The consequences of getting it wrong — regulatory penalties, health liabilities, environmental damage — are far greater than the cost of getting it right. ALS Testing Services (Thailand) Co., Ltd.  _  Your VOC Analysis Partner ALS Testing Services (Thailand) Co., Ltd. provides comprehensive VOC analysis across air, water, and soil matrices — powered by advanced analytical technology and a team of experienced specialists. Our capabilities include: ✅ GC-MS analysis for precise VOC identification and quantification ✅ Headspace GC for liquid and water-phase VOC testing ✅ Field and laboratory sampling support ✅ Results delivered to international standards with full technical interpretation  Tel: +(66) 2700 9665  Email: pathumthani@alsglobal.com From regulatory compliance to product safety verification — contact ALS Testing today for VOC analysis you can rely on.

Component Cleanliness: The Hidden Factor That Keeps Industry Running When Clean Isn’t Just Tidy — It’s Critical In precision manufacturing, a single microscopic particle in the wrong place can bring an entire system to a halt. Component cleanliness — the rigorous process of ensuring that manufactured parts are free from contamination — is one of the most important yet often overlooked disciplines in modern industry. Whether you’re producing automotive parts, aircraft components, electronic assemblies, or industrial machinery, contamination control isn’t a finishing step. It’s a fundamental quality requirement that directly impacts performance, safety, and service life. 7 Reasons Component Cleanliness Can’t Be Ignored 1. Preventing Wear and Component Damage Unwanted particles — dust, metal shavings, oil residues — act like sandpaper inside precision mechanisms. When contaminants infiltrate moving parts, they accelerate friction and wear, causing components to degrade far faster than designed. Proper cleaning dramatically extends component service life and protects the investment in precision manufacturing. ⚙️ 2. Eliminating Jamming and Operational Irregularities In systems where components move or interact — such as engines, hydraulic circuits, or pneumatic systems — even minor contamination can disrupt smooth operation. The result? Sluggish movement, unexpected jamming, or complete system seizure. Clean components move as designed: reliably, smoothly, and without interruption. 3. Reducing Fire and Explosion Risk In chemical processing and aerospace applications, contamination isn’t just a mechanical problem — it can be a safety hazard. Accumulated chemical residues or reactive substances inside components can trigger unintended chemical reactions or generate dangerous heat buildup. Regular cleaning eliminates this risk before it becomes a crisis. 4. Protecting Product Quality In electronics and pharmaceutical manufacturing, even trace-level contamination on sensitive components can compromise the entire product — causing functional defects, failed inspections, or non-compliance with quality standards. Component cleanliness ensures that what comes off the production line meets specification, every time. 5. Preventing Cascading Production Problems Contamination doesn’t stay in one place. Dirty components introduce particles into manufacturing equipment, causing blockages, inconsistent outputs, and efficiency losses that compound over time. Cleaning at each stage of production keeps the entire manufacturing process running smoothly — preventing small problems from becoming expensive shutdowns. 6. Reducing Maintenance Costs Clean components simply last longer and break down less frequently. By preventing contamination-related damage, regular cleanliness protocols significantly reduce repair and replacement costs — delivering measurable savings over the life of equipment and machinery. 7. Meeting Industry Standards and Regulatory Requirements Component cleanliness is not just good practice — in many industries, it’s a mandatory requirement. Standards such as ISO, ASTM, VDA 19, and ISO 16232 define specific cleanliness thresholds that must be met. Compliance protects product quality, supports certification, satisfies legal obligations, and demonstrates a genuine commitment to safety. The Bottom Line Component cleanliness is one of the most cost-effective investments in manufacturing quality. When contamination is controlled: ✅ Components last longer ✅ Systems run more reliably ✅ Production processes stay efficient ✅ Safety risks are minimized ✅ Products consistently meet international standards Neglecting it, on the other hand, invites a cascade of preventable failures — from premature wear and system downtime to product recalls and safety incidents. ALS Testing: Your Partner in Cleanliness Verification ALS Testing Services provides a comprehensive range of component cleanliness testing and analysis capabilities — giving you the scientific data to verify cleanliness levels, identify contamination sources, and make confident quality decisions. Our Testing Instruments and Capabilities Table Instrument / Method What It Does FT-IR & FT-IR Microscopy Identifies organic contaminants, polymer residues, and unknown substances on component surfaces Liquid Particle Counter (LPC) Measures and counts suspended particles in liquid — ideal for hydraulic fluids and cleaning baths VDA 19 / ISO 16232-2018 Particle Analysis Industry-standard measurement and counting of particles on automotive components Ion Chromatography (IC) Quantifies residual ionic contamination — critical for corrosion prevention and electronic reliability HPLC (High Performance Liquid Chromatography) Separates and analyzes complex chemical mixtures including coatings, additives, and process residues SEM/EDX High-resolution surface imaging combined with elemental analysis — pinpoints the composition and origin of contamination particles GC/MS (Liquid & Gas Sample Preparation) Identifies and quantifies volatile and semi-volatile organic compounds in both liquid and gas-phase samples Why Choose ALS? ✅ ISO/IEC 17025 accredited laboratory — internationally recognized, reliable results  State-of-the-art analytical instruments — the right tool for every contamination challenge ‍ Experienced specialist team — expert interpretation and actionable recommendations  Serving multiple industries — automotive, electronics, aerospace, pharmaceutical, and more Contact ALS Testing Services (Thailand) ALS Testing Services (Thailand) Co., Ltd. Advanced chemical analysis and materials testing — powered by modern technology and specialist expertise.  Tel: +(66) 2700 9665  Email: pathumthani@alsglobal.com Don’t leave cleanliness to chance. Contact our team today to find the right testing solution for your components and your industry.

PCB Testing: Ensuring Every Circuit Performs When It Matters Most The Tiny Board Behind Every Big Technology From the smartphone in your pocket to life-saving medical devices and satellite systems, Printed Circuit Boards (PCBs) are the invisible backbone of modern electronics. These precisely engineered boards use etched copper pathways on insulating substrates to mount and connect electronic components — and when they fail, everything built around them fails too. That’s why PCB testing isn’t optional. It’s essential. Comprehensive testing throughout the design, manufacturing, and assembly stages is the only reliable way to ensure a PCB will perform consistently and safely — across every application, in every environment it was built for. Why PCB Testing Is Non-Negotiable 1. Quality Assurance That Protects Your Product A PCB defect doesn’t stay confined to the board — it becomes a system failure. Testing identifies and resolves issues before a defective board ever makes it into a finished product, safeguarding both performance and reliability. 2. Catching Problems Early Saves Money The earlier a defect is found, the cheaper it is to fix. Detecting a fault on the production line costs a fraction of what it costs to address the same problem after assembly, shipping, or — worst of all — after a customer complaint. PCB testing directly reduces rework, scrap, warranty claims, and recall costs. 3. ️ Reliability Where It Counts Most PCBs power some of the world’s most critical systems — medical devices, aerospace equipment, industrial controls. In these applications, failure isn’t just inconvenient; it can be dangerous. Rigorous testing ensures every board meets the reliability standards required to perform under demanding, real-world conditions. 4. Defect Detection Across the Full Spectrum PCB testing covers a wide range of potential failure modes: Short circuits and open circuits Soldering defects Component misplacement or misalignment Material inconsistencies Thorough testing catches these issues systematically — not by chance. 5. ✅ Process Verification, Not Just Product Inspection PCB testing isn’t just about finding what went wrong — it verifies that the entire manufacturing process is working correctly. From etching and drilling to soldering and component placement, testing confirms that every step consistently meets specification. 6. ⚡ Functional Verification Beyond physical inspection, PCBs must be verified to work as intended. This means testing: Electrical connectivity Signal integrity Component functionality across the entire board 7. ️ Environmental Stress Testing Depending on the application, PCBs may face extreme temperatures, high humidity, vibration, or thermal cycling in service. Environmental testing determines whether a board can withstand these stresses without performance degradation — a critical checkpoint for any product going into challenging conditions. Testing Standards: The Framework for PCB Quality PCB testing is governed by widely recognized international standards that define acceptance criteria and test methodologies. The most commonly applied specifications include: Table Standard Application IPC-6012 Qualification and performance for rigid PCBs IPC-6013 Flexible and rigid-flex printed boards IPC-6016 High-density interconnect (HDI) boards IPC-6018 Microwave end-product boards MIL-PRF-55110 Military-grade rigid PCBs MIL-P-50884 Military flexible printed wiring MIL-PRF-31032 Military printed circuit board manufacturing Testing to these standards ensures your PCBs meet both commercial and defense-grade quality benchmarks — supporting certification, supplier qualification, and market access globally. ALS PCB Testing Capabilities ALS Testing provides a comprehensive suite of PCB testing services covering both raw materials and fully assembled PCAs (Printed Circuit Assemblies). Our capabilities include: Ionic Cleanliness Testing (IC / ROSE) Ionic Contamination (IC) testing and Resistivity of Solvent Extract (ROSE) testing measure the level of ionic contamination on a PCB surface — residues from flux, cleaning agents, or handling that can cause corrosion, current leakage, or dendritic growth over time. Even trace ionic contamination can significantly shorten a PCB’s service life, particularly in high-humidity environments. Advanced Instrumental Analysis: FT-IR & SEM/EDX FT-IR (Fourier Transform Infrared Spectroscopy) Identifies organic compounds, polymer residues, contaminants, and coating materials on PCB surfaces. Ideal for pinpointing the chemical nature of unknown substances affecting board performance. SEM/EDX (Scanning Electron Microscopy with Energy Dispersive X-ray Analysis) Delivers high-resolution surface imaging combined with precise elemental analysis — enabling detailed investigation of solder joint quality, surface contamination, corrosion mechanisms, and coating integrity at the microscale. IPC-TM-650 Test Methods A comprehensive set of standardized test procedures covering mechanical, chemical, electrical, and environmental properties of PCB materials and assemblies — the industry’s definitive testing reference. ️ Thermal Analysis: DSC & TGA DSC (Differential Scanning Calorimetry) Measures thermal properties such as glass transition temperature (Tg), melting point, and cure state of PCB laminates — critical data for predicting how a board will behave at operating temperatures. TGA (Thermogravimetric Analysis) Evaluates material stability and decomposition behavior under heat — essential for understanding the long-term thermal durability of PCB materials. Cross-Section Analysis One of the most revealing techniques in PCB failure investigation. Cross-sectioning exposes the internal structure of through-holes, vias, solder joints, and plating layers — allowing direct visual assessment of manufacturing quality and the root cause of failures that aren’t visible from the surface. The ALS Advantage: Experience You Can Rely On ALS Testing has been delivering PCB quality testing for many years, building deep expertise across a wide range of board types, standards, and failure scenarios. When a problem is detected, our team doesn’t just report a result — we help you understand it. From evaluating overall board quality to conducting thorough failure analysis, ALS provides the scientific insight and technical guidance needed to resolve issues efficiently and prevent them from recurring. Summary: Build Boards You Can Trust PCB testing is one of the highest-return investments in electronics manufacturing. It protects your product quality, reduces costs, ensures regulatory compliance, and — most importantly — ensures that the products you put into the world work reliably for the people who depend on them. Whether you’re qualifying new materials, investigating a field failure, or implementing ongoing quality control, ALS Testing has the accreditation, the instruments, and the expertise to deliver results you can act on. ALS Testing Services (Thailand) Co., Ltd. Advanced chemical analysis and materials testing — powered by modern technology and specialist expertise.  Tel: +(66) 2700 9665  Email: pathumthani@alsglobal.com Let’s make sure your PCBs perform exactly as designed — every time. Reach out to our team today.

Particle & Contamination Analysis for Automotive Components VDA 19 / ISO 16232 — Under ISO/IEC 17025 Accreditation Why Cleanliness Is Critical in Automotive Manufacturing In automotive manufacturing, invisible contamination can cause very visible — and very costly — failures. Microscopic particles left on components can block hydraulic systems, wear down precision surfaces, and trigger electronic malfunctions. That’s why the automotive industry has developed rigorous international standards to control component cleanliness. ALS Testing provides comprehensive particle measurement, counting, and analysis services for automotive components in full compliance with VDA 19 and ISO 16232:2018 — the two most important cleanliness standards in the global automotive supply chain — conducted within our fully ISO/IEC 17025 accredited laboratory. Our testing goes beyond simple quality checks. It supports new product development, drives manufacturing process improvements, and provides the scientific data needed to protect product performance and safety in the field. The Two-Stage Testing Process: VDA 19 / ISO 16232 ALS holds accreditation specifically covering ISO 16232 testing within the scope of our ISO/IEC 17025 certification. Our testing follows a structured two-stage methodology: Stage 1: Decline Test — Validating Extraction Parameters Before full particle analysis can begin, it’s essential to confirm that the extraction process itself is working correctly for your specific component. This is what the Decline Test establishes. How it works: The component undergoes a controlled extraction process to remove particles from its surface and internal passages The extraction fluid is filtered through a membrane filter The filter is analyzed using a Particle Analyzer This process is repeated six times on the same component, yielding six individual filter membranes Results from all six filters are plotted on a graph and evaluated against VDA 19 / ISO 16232 acceptance criteria ✅ If the results meet the standard’s requirements, the extraction parameters are validated — and the process moves on to Stage 2. Think of this as calibrating your measurement process before taking the actual measurement. It’s what separates reliable data from guesswork. Stage 2: Particle Analysis — Size, Quantity, and Classification With validated extraction parameters in place, the component undergoes its full particle analysis according to VDA 19 standards. The extraction fluid is filtered and the membrane is examined using a Particle Analyzer to determine: Table Parameter What It Tells You Quantity How many particles are present Size The dimensional range of particles detected Type What the particles are made of Particle Classification All detected particles are categorized into three types:  Metallic — Metal particles from machining, wear, or assembly  Non-Metallic — Rubber, plastic, ceramic, or mineral particles  Fiber — Natural or synthetic fiber contamination Going Deeper: Advanced Identification Techniques When standard particle analysis isn’t enough — for example, when you need to know the exact elemental composition or chemical identity of a contaminant — ALS applies specialized analytical techniques. For Metallic Particles: SEM/EDX Analysis Scanning Electron Microscopy with Energy Dispersive X-ray Analysis (SEM/EDX) is the gold standard for characterizing metallic particles at the microscopic level. How It Works SEM directs a focused electron beam across the particle surface, generating high-resolution images that reveal surface morphology and structural detail at the micrometer scale EDX detects the characteristic X-rays emitted when the electron beam interacts with atoms in the sample — effectively producing a unique elemental fingerprint for each material What SEM/EDX Can Tell You Table Capability Application Elemental composition at micrometer level Identify what metal alloy a particle came from Chemical mapping across a surface Visualize element distribution in coatings or alloys Surface and structural defect analysis Detect cracks, wear patterns, and coating failures Corrosion characterization Trace signs of oxidation or chemical attack Coating thickness and layer analysis Verify coating integrity and uniformity Why It Matters SEM/EDX doesn’t just identify that a metallic particle exists — it tells you exactly where it came from. That’s the information you need to trace contamination back to its source in the manufacturing process and fix it permanently. For Non-Metallic Particles & Fibers: FT-IR Analysis Fourier Transform Infrared Spectroscopy (FT-IR) is the technique of choice for identifying non-metallic materials such as plastics, rubbers, resins, and fibers. How It Works Every chemical compound absorbs infrared light in a unique pattern — essentially a molecular fingerprint. FT-IR measures how a sample absorbs infrared radiation across different wavelengths, then matches that pattern against reference libraries to identify the material with high confidence. Sample Types FT-IR Can Analyze Table State Examples Solid Plastics, rubber, synthetic and natural fibers Liquid Cleaning agents, paints, oils, adhesives Gas/Vapor Volatile organic compounds FT-IR Capabilities at ALS High-Sensitivity MGT-A Detector — ensures precise, reliable measurements even at trace levels Interchangeable Accessories (VATR, Liq-Cell, ZnSe Compression Cell) — enables analysis of samples in any physical state Nicolet Nic-Plan Microscope — specialized for analyzing microscopic particles and trace contaminants Applications ✅ Qualitative Analysis — Identify polymers, resins, adhesives, oils, and unknown contaminants ✅ Quantitative Analysis — Measure the concentration of specific chemical components in a sample Key Advantages Requires only a tiny sample — ideal for microscopic contaminants Non-destructive — the sample can be preserved for further testing if needed Fast and accurate — results are typically available quickly without complex preparation Industries Served at ALS Pathumthani FT-IR testing at ALS supports a broad range of sectors: Automotive Electronics & IT Telecommunications Plastics & Polymers manufacturing Why Particle Analysis Matters to Your Business Particle and contamination analysis isn’t just a laboratory exercise — it delivers measurable business value across the entire manufacturing operation. ✅ Tighter Quality Control Understanding particle size and distribution enables manufacturers in automotive, food, pharmaceutical, and chemical industries to consistently meet product specifications — and catch deviations before they reach the customer. ⚙️ Optimized Production Processes By monitoring particle characteristics in real time, manufacturers can fine-tune process conditions continuously — ensuring consistent output and reducing variability that leads to defects. ⏱️ Faster Problem Detection Online particle analysis techniques enable real-time process monitoring, dramatically reducing the delays and blind spots associated with offline sampling. When something goes wrong, you find out immediately — not at the end of the production run. Stronger R&D Capability For research and development teams, particle analysis provides the material behavior data needed to design better products, develop new formulations, and understand how materials perform under real-world conditions. Cross-Industry Applicability The value of particle analysis extends well beyond automotive: Table Industry Application Food Controlling powder particle size for texture and consistency Pharmaceutical Verifying drug particle size for efficacy and bioavailability Chemical Managing reagent and product particle size in manufacturing Electronics Detecting contamination in precision components Reduced Production Costs Better quality control means fewer defective products, less rework, and fewer costly recalls. Investing in particle analysis pays for itself through the waste and failure costs it prevents. Why Choose ALS for VDA 19 / ISO 16232 Testing? Table What We Offer What It Means for You ✅ ISO/IEC 17025 accredited Results recognized internationally Full VDA 19 / ISO 16232 scope End-to-end testing under a single accredited roof ⚙️ Advanced SEM/EDX & FT-IR capability Deep-dive identification when standard analysis isn’t enough ‍ Experienced specialist team Accurate analysis and actionable interpretation Comprehensive reporting Clear results ready for customer submission or internal QC Ready to take control of component cleanliness? Contact ALS Testing Services (Thailand) Co., Lt. today to discuss your VDA 19 / ISO 16232 testing requirements — and let our experts help you meet the standards your customers and partners demand.  Tel: +(66) 2700 9665  Email: pathumthani@alsglobal.com

Corrosion Testing & Salt Spray Test: How Strong Is Your Material Against the Elements? When Rust Is More Than Just Ugly — It’s a Safety Risk Every material degrades over time. But in industries where structural integrity is non-negotiable — construction, transportation, energy, aerospace, and marine — corrosion isn’t just a cosmetic issue. It’s a safety and business liability. Corrosion testing gives manufacturers, engineers, and quality managers the data they need to answer a critical question before it becomes a costly problem: How long will this material last — and what will make it fail? What Is Corrosion Testing? Corrosion occurs when materials — particularly metals — react chemically with their environment. Water, oxygen, exhaust gases, acids, and alkalis are all common culprits. Corrosion testing is the systematic process of evaluating how well a material resists these reactions under controlled conditions. The Four Goals of Corrosion Testing Table Objective Why It Matters ⏳ Predict service life Know how long a material will perform before it degrades  Select the right material Match materials to specific environmental conditions — humidity, acidity, temperature  Improve production processes Refine surface coatings or switch to more durable material options ️ Enhance safety Prevent degradation that could lead to structural failure or hazardous conditions   The Gold Standard: Salt Spray Testing Among all corrosion tests, the Salt Spray Test — also known as the Salt Fog Test — is one of the most widely used and internationally recognized methods for evaluating corrosion resistance. By recreating a salt-laden, high-humidity atmosphere inside a controlled test chamber, the Salt Spray Test simulates the kind of corrosive environment that materials face in coastal regions, marine applications, and harsh outdoor settings — in a matter of hours or days, rather than months or years. It’s the go-to test for industries including automotive manufacturing, aerospace, marine engineering, and construction — anywhere that materials must stand up to salt exposure over time. How Does the Salt Spray Test Work? The test follows a clear, standardized process designed to deliver consistent, reproducible results: Step-by-Step Process Step 1: Sample Preparation Test specimens are thoroughly cleaned and prepared to remove any surface contaminants that could interfere with accuracy. A clean baseline is essential for meaningful results. ⚙️ Step 2: Chamber Setup The test chamber is calibrated to precise environmental conditions as specified by the relevant standard — typically 35°C with controlled humidity — creating a uniform corrosive atmosphere for every test. Step 3: Salt Fog Exposure A sodium chloride (NaCl) solution is atomized into a continuous fine mist within the sealed chamber. Specimens are exposed to this salt fog for a defined period — commonly 48, 96, or 240+ hours — depending on the standard and application requirements. Step 4: Inspection and Evaluation Once the test period ends, each specimen is carefully examined for signs of corrosion damage, including: Rust formation Surface discoloration Blistering or swelling Cracking or delamination of coatings International Standards: Testing You Can Trust Globally Salt Spray Testing is governed by internationally recognized standards that ensure results are accurate, comparable, and credible across borders: Table Standard Scope Primary Industries ASTM B117 The most widely adopted Salt Spray standard worldwide Automotive, metal components ISO 9227 International standard for salt corrosion testing Construction materials, industrial equipment JIS Z 2371 Japanese standard for Salt Spray testing Machinery, industrial devices Testing to these standards means your results are recognized by international buyers, regulatory bodies, and certification authorities — a critical advantage in export markets. Reading the Results: What Does Your Material’s Performance Tell You? Salt Spray Test outcomes provide clear, actionable insights into a material’s corrosion resistance: Rust Formation The appearance of rust is a direct indicator that the material’s protective barrier has been compromised. The earlier rust appears, the weaker the corrosion resistance. Surface Discoloration A material with strong corrosion resistance maintains its original color and appearance. Discoloration signals chemical breakdown at the surface. Blistering or Cracking Coating failure often appears as bubbling, peeling, or cracking — indicating that the protective layer has lost adhesion and can no longer shield the base material. Where Salt Spray Testing Makes a Difference: Industry Applications Automotive Steel frames, alloy components, and exterior body parts are routinely tested to ensure they can withstand road salt, rain, and coastal driving conditions over the vehicle’s lifespan. ✈️ Aerospace Aircraft components are exposed to high-altitude humidity and condensation. Salt Spray testing validates that critical parts maintain structural integrity in these demanding environments. ⚓ Marine For vessels, offshore structures, and port infrastructure, resistance to saltwater corrosion isn’t optional — it’s essential. Salt Spray testing confirms that marine-grade materials live up to their name. ️ Construction Structural fasteners, reinforcement materials, and cladding systems used in coastal or high-humidity environments must be rigorously tested before they’re trusted with long-term structural loads. Maintaining Test Equipment: The Overlooked Key to Reliable Results Even the best-designed test is only as good as the equipment running it. To ensure consistent, trustworthy results, Salt Spray test chambers require:  Regular cleaning — to prevent residue buildup that alters test conditions  Routine calibration — to verify that temperature, humidity, and spray concentration remain within specification  Periodic chamber inspection — to confirm structural integrity and seal performance Skipping maintenance doesn’t just affect results — it can compromise the credibility of your entire testing program. Summary: Why Salt Spray Testing Belongs in Your Quality Process The Salt Spray Test is one of the most practical and cost-effective tools available for evaluating corrosion resistance. It delivers fast, standardized, internationally recognized results that help manufacturers: ✅ Validate material and coating performance before production ✅ Meet international quality and export requirements ✅ Identify weaknesses early — before they reach your customers ✅ Build products that genuinely last in the real world Whether you’re developing a new coating system, qualifying a supplier’s materials, or troubleshooting a corrosion complaint from the field, Salt Spray testing gives you the answers you need — backed by science and international standards. ALS Testing Services (Thailand) Co., Ltd. — Your Partner in Corrosion Testing ALS Testing Services (Thailand) Co., Ltd. provides comprehensive chemical analysis and material testing services, powered by advanced technology and a team of experienced analytical specialists. We offer Salt Spray Testing in full compliance with ASTM B117, ISO 9227, and JIS Z 2371, conducted within our ISO/IEC 17025 accredited laboratory — delivering results you can rely on and present with confidence to clients and regulators worldwide.  Tel: +(66) 2700 9665  Email: pathumthani@alsglobal.com Ready to put your materials to the test? Contact us today and let our experts guide you toward the right testing solution for your product and industry.

Why Getting to the Root of the Problem Changes Everything What separates good manufacturers from great ones? It’s not just the ability to build products — it’s the ability to understand why they fail, and prevent it from happening again. Failure analysis and reliability testing sit at the heart of modern quality engineering. Organizations that invest in these processes consistently achieve lower costs, higher customer satisfaction, and stronger market reputations. The numbers back this up: studies show that 73% of production defects can be prevented when the right failure prevention methods are in place. Let’s break down exactly what these processes involve — and why they matter to your business. Part 1: Failure Analysis — Finding the Real Cause, Not Just the Symptom What Is Failure Analysis? Failure analysis is the systematic process of tracing a problem back to its true origin — whether in the manufacturing process, the machinery, or the material itself. Think of it as forensic science for your production line. The goal isn’t just to fix what went wrong. It’s to understand why it went wrong — so it never happens again. Why It Matters ✅ Identifies the root cause of production problems, not just surface symptoms Leads to targeted, effective corrective actions ⏱️ Reduces wasted time and resources in future production cycles  Prevents costly product recalls before they ever occur Does your business have a systematic failure analysis process in place? If not, you may be one production run away from an expensive recall. ALS offers a range of specialized testing methods to help clients pinpoint the exact cause of damage or defects — whether related to contamination, material inconsistencies, or process-related issues. Failure Analysis Services at ALS Optical Microscope Examination The essential first step in any failure investigation. Optical microscopy reveals surface defects, cracks, chips, and structural anomalies that are invisible to the naked eye — providing a rapid, cost-effective overview before more advanced techniques are applied. Scanning Electron Microscopy (SEM) When optical microscopy isn’t enough, SEM takes you deeper. With magnification capabilities far beyond conventional microscopes — and built-in EDX capability for precise elemental composition analysis — SEM is the go-to technique for detailed failure characterization. It answers not just what failed, but what the material is made of at the point of failure. Foreign Material Identification Contamination is one of the leading causes of product failures across industries. This service identifies and characterizes unwanted foreign substances in products — critical for food, pharmaceutical, and electronics manufacturing, where even trace contamination can have serious consequences. Micro-metrological Measurements Precision dimensional analysis at the microscale, including: Step height measurement Surface flatness measurement Surface roughness measurement These measurements detect dimensional deviations at the micrometer level — catching issues that would otherwise go unnoticed until a product fails in the field. FT-IR Microscopy Analysis Ideal for identifying organic compounds and polymer materials, FT-IR microscopy can accurately characterize materials and contaminants at the microscopic level. It’s an essential tool for the plastics and polymer industries, and widely used in international reliability testing standards. Cross-sectional Analysis Sometimes you need to look inside. Cross-sectional analysis reveals the internal structure of a material or component — making it invaluable for evaluating coating integrity, layer adhesion, and interface quality between dissimilar materials. The insights gained directly inform process improvements and defect prevention strategies. Part 2: Reliability Testing — Proving Your Product Will Go the Distance What Is Reliability Testing? A product might look perfect coming off the production line. But will it still perform six months later, in a humid warehouse in Southeast Asia, or under the hood of a car in the middle of a desert summer? Reliability testing answers that question — before your customers do. It’s the process of evaluating whether a product or material will function correctly throughout its expected service life, under realistic operating conditions. By simulating environmental stresses in a controlled laboratory setting, reliability testing compresses years of real-world wear into days or weeks of accelerated testing. The Business Case for Reliability Testing Table Benefit Impact ️ Validated product quality and safety Confidence before market launch Reduced product recalls Studies show reliability testing can cut recall rates by up to 60% Stronger customer trust Fewer complaints, higher loyalty International market access Products certified to global standards open new doors Long-term brand reputation Consistent quality becomes your competitive advantage ⚗️ Reliability Testing Methods Temperature-Humidity Cycling Simulates the natural cycles of temperature and humidity that products encounter in real-world environments. This test is particularly effective at detecting material fatigue caused by repeated expansion and contraction — a common hidden cause of premature failure in electronics and structural components. Thermal Shock Testing What happens when a product goes from freezing cold to intense heat in seconds? Thermal shock testing finds out. By exposing products to sudden, extreme temperature changes, this test reveals whether materials and joints can withstand the thermal stresses of demanding operating environments. Chemical Compatibility Studies Not all materials play well with the chemicals around them. This testing evaluates how materials respond to chemical exposure over time — identifying degradation, swelling, or structural breakdown before it causes field failures. For industries ranging from automotive to pharmaceuticals, chemical compatibility is a non-negotiable checkpoint. Salt Spray Chamber Testing A controlled simulation of salt-laden environments — essential for metal components used in marine, coastal, or high-humidity settings. Salt spray testing predicts corrosion resistance and helps engineers accurately estimate product lifespan under corrosive conditions. Xenon Arc Testing (UV Weathering) Sunlight is one of the most damaging forces that outdoor products face. Xenon arc testing replicates the full spectrum of solar radiation to evaluate how materials — paints, plastics, coatings — degrade under prolonged UV exposure. Leading manufacturers use this in parallel with broader risk assessments to validate outdoor durability. Reliability Testing by Industry: Which Tests Matter Most? Table Testing Method Electronics Automotive Food & Pharma Construction Temperature-Humidity Cycling ●●●● ●●● ●● ●● Thermal Shock ●●●● ●●●● ● ●●● Chemical Compatibility ●● ●●● ●●●● ●●●● Salt Spray Test ●● ●●●● ● ●●●● Xenon Arc (UV) Test ●● ●●● ●● ●●●● ● = Relevance level (more dots = higher importance for that industry) The Bottom Line: Failure Analysis + Reliability Testing = Competitive Advantage In a market where quality expectations are rising and the cost of failures is higher than ever, failure analysis and reliability testing are no longer optional — they’re essential. Together, these two disciplines give manufacturers a complete quality assurance framework: Failure analysis tells you what went wrong and why — enabling precise, permanent fixes Reliability testing confirms your product will perform as promised — under every condition your customer will encounter Organizations that embrace both consistently outperform those that don’t — with lower defect rates, fewer recalls, stronger customer relationships, and a brand reputation built on genuine, proven quality.  Ready to strengthen your products with professional failure analysis and reliability testing? Contact our specialists today for a consultation tailored to your specific industry and product needs — and take the first step toward quality that your customers can count on.

Why Failure Analysis and Reliability Begin with Understanding Your Materials In manufacturing and engineering, using the wrong material — or not fully understanding the one you’re using — can be catastrophic. Material testing is how industry professionals eliminate that uncertainty. It ensures that every component, structure, and product performs exactly as intended, under real-world conditions. In today’s industrial landscape, effective material testing doesn’t just improve product quality — it reduces production risks, enhances safety, and prevents costly failures before they happen. What Is Material Testing? At its core, material testing is a systematic process for examining and evaluating the properties of a material — how it behaves, what it can withstand, and where its limits lie. These properties fall into three key categories: ⚙️ 1. Mechanical Properties How does the material respond when force is applied? This covers strength, flexibility, toughness, and resistance to repeated stress — the properties that determine whether a material holds up or breaks down under load. 2. Chemical Properties How does the material interact with its environment? This includes its composition, reactivity, corrosion resistance, and behavior when exposed to chemicals — critical for products used in harsh or chemically active environments. 3. Physical Properties What are the material’s inherent physical characteristics? Density, thermal conductivity, and electrical conductivity all fall here — properties that define how a material fits into its intended application. Together, these three dimensions give engineers and manufacturers a complete picture of a material’s capabilities — and its vulnerabilities — before anything goes into production. Two Fundamental Approaches to Testing     1. Destructive Testing (DT) As the name suggests, this approach involves permanently altering or breaking the test specimen to extract precise data about its mechanical properties. It’s the go-to method when you need hard numbers and real-world simulations. Common Destructive Tests: Table Test What It Measures Tensile Test Strength and elasticity under pulling force Impact Test Toughness and resistance to sudden shock Hardness Test Resistance to surface deformation under pressure Fatigue Test Service life under repeated cyclic loading Why it’s valuable: Delivers accurate, quantitative data on mechanical behavior Closely simulates real operating conditions Backed by internationally recognized standards such as ASTM and ISO   ️ 2. Non-Destructive Testing (NDT) NDT examines materials and components without causing any damage — meaning the tested part can go straight back into service. It’s the preferred choice for quality control, in-service inspection, and detecting hidden defects. Common Non-Destructive Tests: Table Test What It Detects Ultrasonic Testing Internal cracks, voids, and inclusions Radiographic Testing (X-ray) Internal structural defects and anomalies Liquid Penetrant Testing Surface-breaking cracks and discontinuities Magnetic Particle Testing Surface and near-surface defects in ferrous materials Why it’s valuable: Zero damage to the component — ready to use immediately after testing Cost-effective over the long term — no material wastage Can be applied to structures and machinery already in service, such as bridges, pipelines, and industrial equipment   Chemical Analysis: Looking Deeper into Material Composition Understanding a material’s physical behavior is only part of the story. Chemical analysis reveals what a material is made of and how it will react in its environment. This is especially critical in industries like hard disk manufacturing and automotive production, where contamination or compositional inconsistencies can cause serious failures. Key Chemical Analysis Instruments GC-MS (Gas Chromatography–Mass Spectrometry) The gold standard for detecting organic compounds and contaminants. GC-MS separates and identifies volatile substances with extraordinary precision — down to the parts per million (ppm) or even parts per billion (ppb) level. Ideal for detecting trace impurities in materials. HPLC (High Performance Liquid Chromatography) Designed for analyzing complex liquid mixtures, particularly compounds that are non-volatile or heat-sensitive. Used to quantify surface coatings, additives, and residual substances in a wide range of materials. IC (Ion Chromatography) A specialized technique for detecting and measuring ions in solution — particularly those responsible for corrosion. Critical for materials used in humid environments or those in contact with liquid media. Specialized Chemical Property Testing Chemical Resistance Testing Studies how materials degrade when exposed to real-world chemicals Measures changes in weight, shape, and mechanical properties after chemical exposure Predicts service life in chemically aggressive environments Corrosion Testing Determines corrosion rates of metals across different environments Investigates corrosion mechanisms and contributing factors Evaluates the effectiveness of anti-corrosion coatings and treatments Migration Testing Checks whether materials release substances into food, packaging, or medical devices Assesses safety compliance with health and regulatory requirements Measures the quantity of released substances under simulated use conditions The Real Business Case for Material Testing Investing in material testing isn’t just about compliance — it’s about protecting your business at every level: Table Benefit What It Means in Practice ✅ Quality Assurance Confirms materials meet required specifications before production  Product Development Provides the data needed to design better, smarter products  Failure Prevention Identifies weaknesses before they become costly problems  Cost Reduction Prevents expensive recalls, rework, and liability claims  Regulatory Compliance Meets legal and industry requirements across sectors Frequently Asked Questions     Q: How long does material testing take? It depends on the type of test. Basic tests can be completed in a few hours, while complex evaluations — such as fatigue testing — may take several days or even weeks. A good laboratory will give you a clear timeline upfront. Q: How do I know which testing method is right for my material? The right method depends on your objective, the type of material, and the properties you need to evaluate. Consulting with an experienced testing specialist ensures you choose the most efficient and accurate approach for your needs. Q: Is material testing necessary for small businesses? Absolutely. Quality failures don’t discriminate by company size. The cost of a product recall, customer complaint, or safety incident will always far exceed the cost of testing. For small businesses especially, one quality failure can be devastating — making proactive testing a smart investment, not an optional extra. The Bottom Line Material testing is one of the most powerful tools available to manufacturers and engineers. Whether you’re validating a new material, troubleshooting a production issue, or ensuring compliance with international standards, systematic testing gives you the knowledge to make confident decisions. The choice between destructive and non-destructive testing, mechanical and chemical analysis, isn’t an either/or — it’s a toolkit. The best results come from selecting the right combination for your specific application. Investing in quality material testing doesn’t just protect your products — it protects your brand, your customers, and your bottom line. For organizations that want true confidence in their products, partnering with an ISO/IEC 17025 accredited laboratory ensures that every test is conducted with the precision, reliability, and scientific rigor your industry demands.  Ready to put your materials to the test? Work with certified experts who can guide you from sample preparation to actionable results — and help you build products that genuinely last.

Salt Spray Test: The Quality Check Your Metal Products Can’t Afford to Skip What Is a Salt Spray Test? Picture this: instead of waiting years to find out whether your metal product will rust in the real world, you get a reliable answer in a matter of hours. That’s the power of the Salt Spray Test. This internationally recognized standard method evaluates how well metals and surface coatings resist corrosion — and it’s a non-negotiable quality checkpoint for products like fasteners, automotive components, and structural engineering materials. By recreating a highly concentrated salt fog environment inside a controlled test chamber, the test artificially accelerates the corrosion process — delivering in hours what nature would take months or years to produce. The result? A clear, data-backed prediction of how your product will hold up in the real world. Why Metal Products Need This Test Every metal — regardless of how well it’s manufactured — is vulnerable to rust and degradation when exposed to moisture and corrosive agents. This is especially relevant in Thailand, where a hot, humid climate and extensive coastal regions mean that salt-laden air is a daily reality for many products. And rust isn’t just a cosmetic problem. Corrosion attacks the core mechanical properties that make metal products reliable: ️ Structural strength  Tensile resistance ️ Impact durability ⏳ Overall service life That’s why global standards bodies — ISO, ASTM, and JIS — have established strict Salt Spray Test requirements. Failing to meet these benchmarks doesn’t just mean a lower-quality product. It means market rejection, failed certifications, and significant financial consequences. How the Test Works: A Step-by-Step Breakdown The Salt Spray Test follows a precise, systematic process designed to ensure consistent and reliable results: Step 1: Sample Preparation Metal specimens are thoroughly cleaned per ISO 8407 to remove any contaminants that could skew results. They’re then carefully positioned inside the Salt Spray Chamber at the correct angle for uniform exposure. ⚙️ Step 2: Controlled Test Conditions The chamber maintains tightly regulated parameters throughout the test: NaCl concentration: 5% ± 0.5% Temperature: 35°C ± 2°C pH level: 6.5 – 7.2 These conditions create a standardized corrosive environment that is repeatable and comparable across laboratories worldwide. ⏱️ Step 3: Test Duration by Standard Test duration depends on the product’s intended application and the applicable international standard: Table Duration Standard Application 48 hours ISO 9227 General consumer products 96 hours ASTM B117 Industrial-grade components 240+ hours JIS Z 2371 Harsh environment, high-durability products Step 4: Evaluation and Analysis Once the test concludes, every specimen is assessed against strict criteria: Rust coverage — must not exceed the allowable threshold Coating adhesion — no peeling, blistering, or delamination permitted Remaining coating thickness — must not fall below the minimum requirement Post-test mechanical properties — strength and durability must be retained       What Happens When Products Fail the Test? In today’s export-driven manufacturing landscape, failing a Salt Spray Test carries consequences that go far beyond a rejected sample: ❌ Lost Certifications Products that fail cannot obtain international quality certification — locking them out of markets with strict quality requirements. Entire Shipments Rejected Real-world cases from metal parts exporters show that non-compliant products can lead to full-batch rejections — with manufacturers bearing the cost of return shipping on top of lost revenue. Long-Term Reputation Damage A track record of delivering below-standard products erodes client trust — and trust, once lost, is difficult to rebuild. Future business opportunities quietly disappear. Expensive Rework and Delays Reworking rejected products means additional raw material costs, extra production time, and delayed delivery schedules — a compounding financial drain that hits your bottom line hard. Choosing the Right Testing Partner Not all test results are created equal. The credibility of your Salt Spray Test depends heavily on the laboratory conducting it. Here’s what to look for — and why ALS Testing delivers on every count: Why ALS Testing? ALS Testing is an ISO/IEC 17025 accredited laboratory — the international gold standard for testing and calibration facilities. Our Salt Spray testing services are purpose-built for the metals industry, offering: Table What We Offer What It Means for You  High-precision instruments Regularly calibrated equipment ensures consistent, reliable results every time ‍ 20+ years of expertise Scientists and engineers with deep, hands-on knowledge of metals and corrosion  Internationally recognized reports Test certificates accepted by global buyers, auditors, and regulatory bodies  Technical consultation Expert guidance on how to improve your product based on test findings The Bottom Line The Salt Spray Test isn’t just a bureaucratic checkbox — it’s a strategic safeguard for your product quality, your export credentials, and your business reputation. In a competitive global market, partnering with an accredited, trusted laboratory like ALS Testing gives you the confidence that your products are built to last — and the certified proof to back it up. Don’t wait for the market to find your product’s weaknesses. Find them first.  Contact ALS Testing today to schedule your Salt Spray Test and take the next step toward internationally certified quality.

SEM-EDX: The Microscopic Eye That Reveals What Your Materials Are Really Made Of In engineering, research, and industrial quality control, knowing exactly what your materials are made of isn’t just useful — it’s essential. That’s where SEM-EDX (Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy) comes in. This internationally recognized technique gives scientists and engineers an unprecedented look at material composition at the microscopic level, making it one of the most powerful analytical tools available today. What Exactly Is SEM-EDX? SEM-EDX combines two complementary technologies into one powerful system: SEM — Scanning Electron Microscope Imagine being able to zoom into a material’s surface up to 500,000 times its actual size, with nanometer-level resolution. That’s what SEM does. Instead of light, it uses a focused beam of electrons to generate incredibly detailed images of a material’s surface and internal structure — all in compliance with ISO/TS 24597. ⚡ EDX — Energy Dispersive X-ray Spectroscopy While SEM shows you what something looks like, EDX tells you what it’s made of. When the electron beam strikes a material, it triggers the emission of X-rays with energy levels unique to each element. By measuring these X-rays, EDX can identify which elements are present and in what quantities — down to a detection limit of approximately 0.1–1% by weight. Together, these two technologies give you a complete picture: both the physical structure and the chemical composition of a material, simultaneously, in the same location.     How Does It Actually Work? The science behind SEM-EDX is sophisticated, but the process follows a clear and logical sequence: Step 1: Sample Preparation Samples are prepared according to ASTM E1508 standards — typically involving surface polishing, solvent cleaning, and in some cases, coating with a conductive material like gold or carbon to prevent charge buildup on non-conductive samples. Step 2: SEM Imaging When the electron beam hits the sample surface, it produces two types of signals: Secondary electrons → reveal surface topography Backscattered electrons → highlight compositional contrast These signals are captured and reconstructed into high-resolution images that show the material’s microstructure in remarkable detail. Step 3: EDX Elemental Analysis High-energy electrons knock inner-shell electrons out of atoms, creating vacancies. When outer-shell electrons drop down to fill these gaps, they release X-rays — and crucially, each element releases X-rays at a characteristic energy level. This is essentially the element’s fingerprint. Step 4: Identification and Quantification The EDX detector captures these X-ray signals and compares them against reference databases using algorithms based on ISO 22309 and ASTM E1508 standards to identify elements and calculate their relative concentrations. Typical accuracy: Major elements: ±1–2% Trace elements: ±5–10% Why SEM-EDX Stands Out Table Feature What It Means for You  Micro-level precision Analyze composition in areas as small as a few micrometers — ideal for examining grain boundaries, inclusions, or localized defects ️ Non-destructive analysis The core sample structure remains intact, allowing follow-up testing with other techniques  Integrated analysis Physical and chemical data are captured together, making correlations faster and more reliable ⏱️ Fast turnaround Preliminary results in minutes; full analysis within 1–2 hours  Versatility Works on metals, polymers, ceramics, composites, and semiconductors What Are the Limitations? No tool is perfect. Here’s what to keep in mind when using SEM-EDX: Light element detection — EDX struggles with elements lighter than sodium (atomic number < 11). Hydrogen, helium, and lithium cannot be detected at all. Quantitative precision — While highly capable, SEM-EDX may be less precise than dedicated techniques like XRF or ICP-MS for strict quantitative work. Sample preparation requirements — Samples must have clean, smooth surfaces, which can occasionally be time-consuming and may alter the sample slightly. Cost — SEM-EDX instruments are expensive to purchase and maintain, and require trained specialists to operate — making per-analysis costs higher than simpler methods. Real-World Applications Across Industries Metals & Materials Case study: SEM-EDX identified sulfide segregation at crack boundaries in a failed oil pipeline — directly pinpointing the root cause of the failure (Journal of Failure Analysis and Prevention, Vol. 18, 2018) Alloy composition verification per ASTM E1508 Phase segregation and elemental distribution analysis Coating interface contamination detection Electronics Case study: SEM-EDX revealed silicon contamination in gold bonding layers as the cause of MEMS sensor failure (IEEE Transactions on Device and Materials Reliability, Vol. 20, 2020) PCB and component defect analysis Solder joint quality inspection Semiconductor material characterization per IEC 61249 Automotive & Aerospace Failure analysis of structural components Weld quality and dissimilar material joint inspection Wear and corrosion analysis per SAE J1757 R&D and Advanced Materials Nanostructure characterization Particle distribution analysis in composite materials Thin-film uniformity inspection for electronics and solar cells How to Choose the Right SEM-EDX Service Provider Getting accurate, actionable results depends not just on the equipment — but on the expertise behind it. When selecting a laboratory, look for: ✅ ISO/IEC 17025 accreditation — The international gold standard for testing and calibration laboratories ✅ Modern, well-maintained instruments — Precision analysis requires instruments that are regularly calibrated and updated ✅ Experienced scientists and engineers — Skilled interpretation of SEM-EDX data is as important as the data itself ✅ Comprehensive reporting — Reports should include SEM images, EDX spectra, quantitative analysis, and expert interpretation — not just raw numbers Why ALS Testing? ALS Testing is an ISO/IEC 17025 accredited laboratory with over 40 years of experience in materials analysis. We serve research institutions, universities, and industrial clients across a wide range of sectors — delivering: High-precision SEM-EDX analysis using state-of-the-art instruments Expert consultation and technical guidance Actionable insights to help you solve problems and improve product quality Whether you’re investigating a product failure, developing a new material, or verifying a supplier’s specifications, ALS Testing gives you the analytical depth and scientific expertise to make confident, informed decisions. The Bottom Line SEM-EDX is one of the most powerful tools available for understanding what materials are made of and why they behave the way they do. By combining high-resolution imaging with precise elemental analysis in a single workflow, it delivers insights that are simply not possible with conventional testing methods. Choosing an accredited, experienced laboratory partner ensures that those insights are accurate, reliable, and truly useful — whether for quality control, failure investigation, or cutting-edge research.  Contact ALS Testing today to learn how SEM-EDX analysis can help you build better products with greater confidence.

In today’s competitive manufacturing landscape, material testing is far more than a routine procedure — it’s a strategic investment that reflects a company’s commitment to quality, safety, and reliability. For many businesses, it’s also an unexpected key to unlocking global market opportunities. By identifying substandard materials early and establishing credible quality benchmarks, material testing builds the trust that customers and trade partners demand. ALS Testing, part of the ALS Global network operating in over 70 countries including Thailand, brings world-class testing capabilities directly to Thai businesses. 5 Areas of Material Testing Expertise at ALS Testing 1. Metals & Coatings Corrosion resistance testing: Salt Spray Test, CASS (accelerated corrosion simulation using specialized chemical agents) Mechanical property testing: hardness, tensile, compression, and impact Microstructural analysis: SEM/EDX, XRD, XRF for crystal structure and elemental composition 2. Plastics, Polymers & Chemical Materials Organic compound identification using FT-IR spectroscopy Xenon Arc Testing for UV-induced plastic degradation Migration testing — detecting chemicals released from packaging or pharmaceutical/food-contact materials 3. Electronics & Semiconductors Failure analysis of PCBs, PCBAs, and electronic components (cross-section analysis, failure investigation) Component cleanliness and particle testing: LPC, VDA 19 / ISO 16232 Trace element and foreign substance detection: SEM/EDX, GC-MS, HPLC, IC ️ 4. Construction Materials & Environmental Samples Contaminant analysis in construction materials: cement, ceramics, pesticides, and heavy metals Waste material and soil testing to international standards ️ 5. Cosmetics, Food & Pharmaceuticals Testing for allergens, contaminants, and microbial contamination Sterility testing for pharmaceuticals, microbial limits for cosmetics, and pathogen detection in food products Advanced Testing Instruments at ALS Testing SEM/EDX — Microstructural & Elemental Analysis Scanning Electron Microscopy combined with Energy-Dispersive X-ray Analysis provides high-resolution imaging of material surfaces, revealing cracks, defects, and foreign particles — along with precise elemental identification. Ideal for failure analysis and quality control of high-precision parts like electronics and plated metals. FT-IR / HPLC / GC-MS / IC — Organic & Inorganic Chemical Analysis These instruments form the backbone of chemical testing — identifying compounds in materials ranging from coatings, plastics, fragrances, and volatile substances to heavy metals, mineral salts, and ionic species. Used across food, cosmetics, pharmaceutical, electronics, and environmental testing. XRD / XRF — Crystal Structure & Coating Analysis Using X-ray technology, XRD identifies crystal phases in materials like minerals, ceramics, and metal coatings — including internal stress and crystal size analysis. XRF rapidly measures elemental composition without damaging the sample. Both are essential for material verification and quality assurance. ⚙️ Mechanical Testing A comprehensive suite of tests evaluating the physical performance of materials: Table Test Purpose Tensile Test Measures resistance to pulling forces and material elasticity Hardness Test Assesses resistance to scratching and wear Impact Test Evaluates energy absorption under sudden force without fracturing Compression Test Measures resistance to crushing and compressive loads Additionally, environmental simulation tests assess material stability under repeated temperature and humidity cycling — predicting long-term performance in real-world conditions. ️ Environmental Stress Tests Real-world conditions simulated in the lab: Salt Spray Test — Simulates coastal corrosion from salt-laden air Thermal Shock Test — Rapid temperature cycling to assess crack and deformation resistance UV / Xenon Arc Exposure — Simulates sunlight and outdoor weathering degradation 5 Reasons Material Testing Is Essential for Global Business Growth 1. ✅ Quality Verification Testing confirms that production materials meet defined specifications. Plastics must have the right tensile strength and flexibility. Metals must withstand loads without becoming brittle or fracturing. Technical testing at this level is the frontline defense against production failures and field defects. 2. ️ Safety Assessment Before any product reaches the market, material testing evaluates real-world safety risks — from battery components that could overheat and ignite, to wire insulation that must handle current without melting, to medical device components that must withstand mechanical stress without failure. Every test is a layer of protection for the end user. 3. International Certification & Compliance Exporting to global markets means meeting stringent quality, safety, and environmental regulations. Material testing validates compliance with international standards including ISO, ASTM, RoHS, and REACH — ensuring your products legally qualify for sale in target markets and strengthening brand credibility with international buyers. 4. Failure Analysis & Recall Prevention When damage occurs — whether on the production line or after market launch — systematic failure analysis identifies the true root cause: material defects, design flaws, or external factors. Acting on these findings prevents recurrence, reduces costly product recalls, and protects long-term brand reputation. 5. Environmental & Health Compliance (ESG) Material testing plays a vital role in detecting hazardous substances — such as lead, cadmium, and volatile organic compounds (VOCs) — that can accumulate in the body and cause long-term health damage. Rigorous testing from the production stage reduces consumer health risks and aligns your business with the ESG framework (Environmental, Social, Governance), which is increasingly expected by global investors, regulators, and customers alike. Take Your Products to the World with ALS Testing Material testing is the key that unlocks quality confidence, regulatory compliance, and global market access. With world-class technology, internationally accredited laboratories, and deep industry expertise across more than 70 countries, ALS Testing is the trusted partner Thai businesses need to: Reduce production and quality risks Meet international regulatory requirements Build confidence with global customers and trade partners Expand into international markets with certainty Choose ALS Testing as your quality partner — and take your business to the global stage with confidence and sustainability.

In the manufacturing world, surface quality can make or break a product. Salt Spray Testing — also known as Salt Fog Testing — is one of the most widely used methods for evaluating a product’s resistance to corrosion. From metal components and steel parts to automotive hardware, electronics, and medical devices, this test simulates harsh real-world conditions inside a controlled chamber by continuously spraying a sodium chloride (NaCl) solution as a fine mist onto test samples. The result? A clear, reliable picture of how long your product can withstand corrosive environments — before it ever leaves the factory. Which Industries Need Salt Spray Testing? Salt Spray Testing is versatile enough to serve a wide range of manufacturing sectors: 1. Automotive Industry Car frames, bumpers, bolts, and screws must be evaluated for long-term durability in high-pollution, high-salt environments. Salt Spray Testing helps confirm that these components can handle real-world conditions throughout their intended service life. ️ 2. Construction Industry Structural metal components used in buildings and bridges need to demonstrate both strength and corrosion resistance. Salt Spray Testing validates the safety and longevity of these critical materials. ⚡ 3. Electrical & Electronics Industry Electrical and electronic components installed outdoors or in fluctuating weather conditions are constantly exposed to corrosion risk. Testing ensures they can withstand the elements without performance degradation. ⚓ 4. Marine Industry Ship components and marine engines operate in one of the most corrosive environments on Earth. Salt Spray Testing closely simulates actual sea conditions, making it the ideal quality check for marine-grade materials. ️ 5. Metal Coating Industry For coatings such as zinc, chromium, and paint finishes, the test verifies how effectively the coating prevents corrosion — revealing any weaknesses in the protective layer. 6. Outdoor Furniture & Equipment Products like iron fences, ornamental gates, garden tables, and outdoor chairs face constant exposure to moisture and salt in the air. Salt Spray Testing helps prevent premature rusting and structural failure that can quickly damage a brand’s reputation. 3 Key Benefits of Salt Spray Testing 1. Catch Problems Before Delivery Salt Spray Testing acts as a final quality checkpoint — revealing corrosion weaknesses before products reach the customer. If a product corrodes faster than expected, the engineering team can use that data to improve coating formulas, material selection, or packaging — preventing field failures in automotive parts, electrical equipment, and industrial tools. 2. Drive Continuous Product Improvement The data generated by Salt Spray Testing provides actionable insights for ongoing product development — refining coating formulas, switching to more durable materials, or redesigning manufacturing processes — resulting in products with a longer service life that perform reliably in real customer environments. 3. Strengthen Brand Credibility In today’s competitive market, customers and partners make decisions based on trust and verified quality. Test results from an internationally accredited laboratory demonstrate your commitment to excellence and give your brand a measurable, credible quality advantage. How ALS Testing Delivers Salt Spray Results You Can Rely On While some factories have basic in-house testing equipment, only a professional, accredited laboratory can provide results that are internationally recognized, referenceable for export, and accepted by global partners. Here’s what makes ALS Testing’s approach stand out: ✅ ISO/IEC 17025 Accredited Laboratory All Salt Spray Testing at ALS is conducted under full ISO/IEC 17025 accreditation, covering two key pillars: Technical Competence — Tests are performed using calibrated instruments, by trained specialists, following standardized processes — ensuring every result is accurate, consistent, and traceable. Quality Management System — Unlike general ISO 9001 certification, ISO/IEC 17025 is specifically designed for testing and calibration laboratories, ensuring every step of the workflow is systematic, transparent, and quality-controlled. ️ Strict Parameter Control with Calibrated Equipment Every parameter in the Salt Spray process — concentration, temperature, spray rate, and duration — is rigorously controlled using calibrated instruments operated by experienced technicians. This ensures results that are scientifically defensible and reproducible. Clear Reports with Expert Scientific Interpretation Test reports include detailed records of observations, photographs, and environmental conditions at each testing interval. Results are analyzed and interpreted by qualified scientists, providing a direct pass/fail assessment against industry standards or customer-specific requirements. Technical Consultation & Root Cause Solutions When a product fails to meet the standard, our expert scientists don’t just report the result — they investigate the root cause. Whether it’s inadequate surface preparation, inconsistent coating application, or material-related vulnerabilities, we provide clear, actionable recommendations to resolve the issue. Elevate Your Product Standards with ALS Testing In an increasingly competitive manufacturing landscape, having internationally accredited, reliable test results is no longer optional — it’s essential for market access and customer confidence. ALS Testing offers a complete, high-precision Salt Spray Testing service that helps you: Detect problems before products are delivered Reduce the risk of market failures and warranty claims Use test findings to drive product improvement Build stronger trust with customers and OEM partners  Choose ALS Testing for your Salt Spray needs — and take a confident step toward world-class product quality.

In industries like automotive, electronics, and medical devices, cleanliness is not optional — it’s a fundamental requirement. Even microscopic dust particles can compromise product quality, trigger costly recalls, and damage your brand’s reputation. That’s why Dust Analysis (Particle Analysis) is a critical step that gives manufacturers the confidence their products meet both domestic and international standards. ALS Testing Services (Thailand), a member of the ALS Global network with over 40 years of testing and quality inspection expertise, offers comprehensive, internationally accredited dust analysis services — helping businesses elevate product quality and reduce production risk. What Is Dust Analysis? Dust Analysis is the process of detecting, measuring, and classifying particulate contaminants found in components, finished products, or production environments. Using specialized tools and standards, it evaluates whether contamination levels affect: ✅ Product quality and performance ✅ Safety requirements ✅ International standards such as VDA 19 (Technical Cleanliness of Components) and ISO 16232:2018 (Cleanliness of Components in Automotive Manufacturing) ALS Testing’s 3-Step Dust Analysis Service Step 1: Validation of Extraction Parameters Before analysis begins, we verify that the particle extraction method is appropriate for your specific component. This involves 6 repeated extractions, analyzed through a Particle Analyzer — ensuring accuracy and full compliance with VDA 19 / ISO 16232 criteria. Step 2: Particle Analysis Once extraction is validated, the extracted particles are classified into three main categories: Table Category Examples  Metallic Iron, aluminum, and copper shavings from wear and machining  Non-Metallic Plastic, rubber, or environmental dust particles  Fiber Threads from fabric, filters, or packaging materials Results specify the quantity, size, and type of each particle — enabling manufacturers to assess whether their components meet cleanliness standards and to plan precise maintenance actions. Step 3: Advanced Analysis When deeper identification is needed, ALS Testing offers cutting-edge analytical technologies: SEM/EDX (Scanning Electron Microscopy with Energy-Dispersive X-ray Analysis) — identifies the elemental composition of metallic particles FTIR (Fourier Transform Infrared Spectroscopy) — identifies non-metallic particles such as plastics, rubber, and natural fibers   4 Business Benefits of Dust Analysis 1. ️ Reduce the Risk of Product Recalls By detecting contamination before products reach customers, dust analysis helps you catch problems at the source — preventing costly recalls, economic losses, and damage to customer trust. 2. Compete Confidently in Global Markets International markets — especially automotive, electronics, and medical — enforce strict cleanliness requirements. Standards-compliant dust analysis confirms your products are ready for these markets, opening doors to new trade opportunities. 3. ⚙️ Improve Production Process Efficiency Particle data reveals contamination rates and their origins — whether from machinery, the work environment, or assembly steps. This actionable intelligence allows manufacturers to eliminate risk points and optimize production for the long term. 4. Build Customer and Partner Confidence Test results from an ISO/IEC 17025-accredited laboratory provide tangible proof of quality — giving customers and business partners the assurance that your products undergo rigorous quality control. This is a powerful foundation for building lasting business relationships. Which Industries Benefit from Dust Analysis? Dust analysis isn’t limited to automotive alone. Here’s how it adds value across multiple sectors: Food & Beverage Dust and particles from packaging, machinery, or the environment can contaminate food products and cause failures under safety standards like HACCP, GMP, or ISO 22000. ALS particle analysis pinpoints contaminant types and sources — enabling targeted fixes such as improved packaging steps or upgraded air filtration systems. Cosmetics & Personal Care In skincare and cosmetics production, tiny particles — dust, fibers, or material fragments — can cause skin irritation, adverse reactions, or product degradation. Dust analysis helps manufacturers identify and eliminate contamination before products reach consumers. ⛽ Energy & Petrochemical Dust particles, metal debris, and sediment deposits can cause blockages, accelerated wear, and equipment damage that disrupts operations. Regular particle analysis keeps pipes, hydraulic systems, and process equipment clean — maintaining both safety and operational efficiency. Elevate Your Quality Standards with ALS Testing Services In today’s highly competitive industrial landscape, cleanliness standards are not a box to check — they are a strategic quality tool. Neglecting dust analysis risks product defects, regulatory non-compliance, and reputational damage that is far more costly than the test itself. ALS Testing Services (Thailand) is your trusted partner — backed by 40+ years of ALS Global expertise, world-class analytical standards, advanced technology, and clear, actionable reports designed to help you improve, compete, and grow.  Achieve world-class cleanliness confidence — with ALS Testing Services.

In the automotive industry, precision is everything. Countless components operate within hydraulic systems, oil circuits, and delicate mechanisms where even the tiniest foreign particle can cause serious problems. Yet one quality factor that manufacturers often overlook — despite its significant impact — is particle cleanliness. Microscopic metal shavings, plastic fragments, or tiny fibers invisible to the naked eye can silently compromise the performance and lifespan of critical components. That’s why particle analysis is no longer just an inspection task — it’s a core pillar of any robust quality management system. The Standards Behind the Science: VDA 19 & ISO 16232 Two internationally recognized standards govern particle cleanliness testing in the automotive world: Table Standard Role VDA 19 Provides procedural guidelines and test methods ISO 16232 Establishes universal criteria for communication between OEMs and suppliers Using both standards together ensures that particle analysis results are globally comparable, traceable, and credible — making it easier for factories to benchmark quality and meet OEM expectations. Why Does It Matter? Even particles just a few microns in size can trigger unexpected failures, such as:  Blocked oil channels in hydraulic systems  Increased friction and wear in precision moving parts  Stiffening of mechanical components, reducing responsiveness  False signals in electronic systems, causing malfunctions Think of particle analysis as a preventive health check for your production line — identifying contamination risks before they turn into real-world failures. How Particle Analysis Works: A 2-Step Process Step 1: Decline Test — Validating Extraction Parameters The first step under VDA 19 is the Decline Test, which verifies that the particle extraction method is appropriate for the specific component being tested. This confirms that all potentially contaminating particles are consistently extracted — with no variability caused by equipment or methodology. ⚠️ If the Decline Test fails, it signals instability in the production or cleaning process — which must be corrected before proceeding to the main analysis. Step 2: Particle Analysis — Classification and Quantification Once extraction is validated, particles are categorized into three groups:  Metallic — metal shavings or fragments from machining  Non-Metallic — plastic, rubber, or other solid particles  Fiber — thread-like contaminants from packaging or assembly This classification tells manufacturers not just how many particles are present, but what type, what size, and — critically — where they came from: machining, assembly, surface finishing, or even component packaging.   4 Real Business Benefits of World-Class Particle Testing 1. ⬇️ Reduce Scrap and Production Costs Once the source of contamination is pinpointed, targeted corrective actions — such as improving washing steps or adding dust protection — lead directly to lower scrap rates and more stable production output. 2. Boost Supplier Credibility with OEMs Reporting to ISO 16232 means your results speak a universal language that OEMs understand and trust — eliminating interpretation gaps and positioning your factory as a reliable, quality-controlled supplier. 3. Enable Continuous Process Monitoring Particle data allows factories to track cleanliness trends over time, enabling proactive maintenance planning and preventing quality issues from ever reaching the customer. 4. Build the Foundation for Zero Defect Manufacturing By controlling quality at the particle level, factories can detect defects that are completely invisible to the human eye — moving steadily closer to the Zero Defect goal through data-driven, precisely targeted improvements. Comprehensive Particle Cleanliness Testing with ALS Testing For manufacturers committed to systematic cleanliness improvement, conducting particle analysis under VDA 19 and ISO 16232 within an ISO/IEC 17025-accredited laboratory is an essential step — one that reduces quality risk and aligns your processes with the expectations of global automotive manufacturers. ALS Testing delivers a complete end-to-end service covering every stage: ✅ Custom extraction condition design for each component type ✅ Filtration, particle counting, and classification ✅ Categorization per VDA 19 / ISO 16232 criteria ✅ Detailed reports ready for direct OEM submission The results can be immediately applied to improve production processes, plan waste reduction, and establish internal cleanliness standards aligned with your business goals. Whether you’re looking to stabilize production, reduce scrap, strengthen OEM alignment, or lay the groundwork for Zero Defect Manufacturing — particle cleanliness analysis with ALS Testing is the confident first step toward getting there.

n today’s world, where product quality control and safety are non-negotiable for any business, GC-MS (Gas Chromatography-Mass Spectrometry) has emerged as one of the most powerful analytical tools available — giving businesses the confidence that their products are truly safe and up to standard. In this article, we’ll break down what GC-MS is, why it matters across industries (especially food), and how ALS Testing Services (Thailand) can support your business with world-class testing expertise. What Is GC-MS? A 4-Step Process Explained GC-MS is an advanced chemical analysis technique that combines two powerful instruments: GC (Gas Chromatography) — separates the individual compounds within a sample MS (Mass Spectrometry) — identifies and measures each compound by analyzing its mass and chemical structure Together, they allow scientists to identify and quantify substances in a sample with exceptional precision, speed, and detail. Here’s how the process works, step by step: Step 1: Sample Injection The sample — prepared as a liquid or gas — is precisely injected into the GC instrument via an automated injector. A carrier gas then transports it into the separation column. Temperature and pressure are carefully controlled at this stage to preserve sample integrity and ensure accurate results. Step 2: Compound Separation Inside the GC column — a long, ultra-thin tube coated with a special material — individual compounds travel at different speeds depending on their chemical affinity to the coating and their boiling points. This causes each compound to exit the column at a different time, effectively separating the mixture into its individual components, one by one. Step 3: ⚡ Compound Detection Once separated, each compound enters the mass spectrometer, where its molecules are converted into ions through ionization (using electrical energy or light). The MS then measures each ion’s mass-to-charge ratio (m/z) — essentially a unique “fingerprint” for each substance. Step 4: Data Analysis and Identification The MS output is converted into a mass spectrum graph, which displays the distribution and intensity of ions. Analytical software then compares this spectrum against a large reference database of known chemical signatures to identify exactly what substances are present — and in what quantities. This data forms the foundation for evaluating product safety and quality. Why GC-MS Matters: Key Benefits for Your Business GC-MS plays a critical role across multiple industries — food & beverage, pharmaceuticals, environmental science, and chemicals. Here’s why it’s indispensable: Highly Detailed Chemical and Contaminant Analysis GC-MS can detect a wide range of complex organic compounds at extremely low concentration levels — from pesticide residues in food, to environmental toxins, to contaminants in medical products. ✅ Ensuring Product Quality and Safety For businesses producing products that demand high safety standards — food, cosmetics, pharmaceuticals, or medical devices — GC-MS testing confirms that products are free from harmful substances, giving both you and your customers peace of mind. Supporting Regulatory Compliance Many countries and industries require strict testing for chemical residues and contaminants. GC-MS is the go-to tool for meeting these requirements, helping businesses avoid fines, product recalls, and regulatory penalties. Gaining a Competitive Edge Backed by precise analytical data, businesses can communicate product safety and quality to customers and partners with confidence — building lasting trust and sustainable market growth. Why Choose ALS Testing for GC-MS? High Accuracy with Modern, International-Standard Equipment ALS Testing operates state-of-the-art GC-MS instruments under a rigorous quality management system certified to ISO/IEC 17025 — the international benchmark for testing and calibration laboratories. This means results that are accurate, reliable, and globally recognized. End-to-End Service — From Sample to Report Our full-service offering covers every step: professional sample receiving and preparation, advanced instrument analysis, and the delivery of clear, detailed, and easy-to-understand reports — so you can act on the findings immediately. Wide Range of Sample Types Supported Whether your samples are food, water, soil, air, cosmetics, or industrial products, our GC-MS service is built to handle them all — covering the diverse needs of businesses across many sectors. In-Depth Expert Consultation Our team of specialists doesn’t just hand you numbers — they walk you through the results, helping you understand the deeper insights so you can improve your production processes and quality controls effectively. Test Your Products with World-Class GC-MS at ALS Testing Services GC-MS is not just a laboratory technique — it’s a strategic business tool that helps reduce production risks, strengthen market confidence, and elevate product standards. With proven experience and cutting-edge technology, ALS Testing Services (Thailand) is the trusted partner you need for comprehensive, internationally-accredited GC-MS testing.  Take your business to the next level of quality and safety — and step into a new standard of confidence with ALS Testing.

As the automotive industry shifts into the electric vehicle (EV) age, countless components are being redesigned to be lighter, more energy-efficient, and capable of handling high-voltage electrical systems. Modern EVs are no longer built from steel alone — they incorporate aluminum alloys, mixed metals, plastics, and extensive electronics, all working together in increasingly complex structures. But that complexity comes with a hidden risk: corrosion. The Corrosion Challenge in Electric Vehicles The multi-material construction of EVs creates several corrosion vulnerabilities, including:  Localized (pitting) corrosion on aluminum and alloy components ⚡ Galvanic corrosion at joints where dissimilar metals meet  Degradation of electrical connectors and busbars from salt mist and moisture These risks are especially significant in high-humidity coastal areas, or heavily polluted urban environments, where corrosion can accelerate far faster than engineers anticipate — putting long-term user safety at risk. The most vulnerable areas in an EV include: Underbody structural panels Battery packs and mounting brackets Electrical connectors and wiring trays Battery cooling pipes and heat dissipation plates For both parts suppliers and original equipment manufacturers (OEMs), managing corrosion is not just about aesthetics — it directly affects safety, reliability, and long-term costs. This is where the Salt Spray Test becomes essential. What Can a Salt Spray Test Tell You About EV Components? The Salt Spray Test (also known as a Salt Fog Test) simulates a harsh environment of continuous salt mist and high humidity to assess how well a component resists corrosion. Here’s what it can reveal: 1. When Corrosion First Appears One of the key metrics is recording exactly when rust or surface changes begin after the test starts. This data can be benchmarked against OEM specifications to determine pass or fail. 2. The Pattern of Corrosion The test doesn’t just tell you whether corrosion occurs — it shows how it occurs. Engineers can identify: Pitting on aluminum surfaces Coating delamination (peeling protective layers) Corrosion at dissimilar-metal junctions These insights help manufacturers pinpoint whether the root cause lies in the component design, surface preparation, or the coating process itself. 3. ️ Coating System Effectiveness For coated or painted components — such as battery brackets, underbody panels, or electric motor housings — the test verifies whether the protective coating actually works. Early peeling or rust signals a weakness in the coating formula or process that needs to be addressed. Why Salt Spray Testing Is Critical to OEM Standards The increased complexity and safety risks of EV structures have made corrosion testing a mandatory quality gate for OEM approval. Here’s why: 1. Reducing High-Voltage Electrical Safety Risks Electrical connectors, busbars, and battery components are highly susceptible to oxide film formation and surface corrosion. Keeping these free from salt-induced corrosion helps prevent short circuits and abnormal heat buildup in the electrical system. 2. Ensuring Structural Reliability Underbody frames, battery mounting assemblies, and load-bearing structures that rust prematurely can lose structural strength — with serious safety implications. Passing the Salt Spray Test to OEM standards confirms that components can withstand real-world conditions. 3. Meeting International Standards and Enabling Traceability Global OEMs reference standards such as ASTM B117 and ISO 9227, alongside their own internal specifications. Certified lab results are critical for part approval before production begins at an industrial scale. The data from Salt Spray Testing is not just a pass/fail verdict — it is a strategic tool that gives engineering and quality teams a clear direction for continuous improvement. Test Your EV Components with ALS Testing For manufacturers aiming to become suppliers to EV-era OEMs, taking Salt Spray Test data seriously can meaningfully reduce scrap rates, minimize warranty claims, and open doors to long-term business opportunities. ALS Testing provides corrosion testing under strictly controlled Salt Spray conditions, fully aligned with international automotive industry standards — covering sample preparation, salt solution control, temperature management, and detailed reports that can be referenced directly with OEMs. ✅ Elevate your competitiveness in the global market with Salt Spray Testing from the expert team at ALS Testing — a key step toward confident OEM approval, today and into the future of electric mobility. Interested in Salt Spray Testing services? Contact ALS Testing to learn how we can support your EV component qualification process.

ESG Is No Longer Just a Trend — It Is a Business Imperative Environmental, Social, and Governance (ESG) reporting has moved from a voluntary best practice to a core business requirement. Investors, regulators, customers, and the public now expect organizations to back their sustainability claims with data that can actually be verified. For industrial organizations, one of the most critical — and often underestimated — environmental indicators is Volatile Organic Compounds (VOCs). These invisible chemical compounds touch all three pillars of ESG, making accurate VOCs analysis far more than a technical exercise. What Are VOCs — and Why Do They Matter for ESG? Volatile Organic Compounds (VOCs) are chemicals that evaporate easily at room temperature. They are released during manufacturing processes, fuel combustion, and a wide range of industrial activities — often without being seen or smelled until concentrations reach harmful levels. Their relevance to ESG spans all three dimensions: Table ESG Pillar How VOCs Connect  Environment VOCs monitoring reflects how effectively an organization controls its air emissions and environmental impact  Social Exposure to VOCs directly affects worker health and safety — a core social responsibility  Governance Accurate, traceable VOCs reporting demonstrates organizational transparency and accountability VOCs data is not just a technical concentration value. It is evidence of how seriously an organization takes its responsibility to people and the planet. Accuracy Is Everything — Here Is Why Getting VOCs analysis right requires two things working together: proper sample collection and laboratory-grade analysis. Portable field instruments like PID detectors are useful for quick, on-site readings — but they cannot identify specific compounds or produce the defensible results required for formal ESG reporting. For that, laboratory analysis is essential. The most widely used technologies include:  GC-MS (Gas Chromatography–Mass Spectrometry) — the gold standard for identifying and quantifying individual VOC compounds with precision  HSGC (Headspace Gas Chromatography) — optimized for analyzing VOCs in water samples  SPE (Solid Phase Extraction) — used to prepare soil and water samples before GC-MS analysis But technology alone is not enough. The accuracy of results also depends on: How samples are collected and preserved The chain of custody maintained during transport The laboratory’s internal quality control systems Weak processes at any of these stages can produce misleading data — and in an ESG context, misleading data carries real consequences. VOCs Across Three Environmental Media VOCs do not stay in one place. They migrate through air, water, and soil — which means effective monitoring requires a tailored approach for each medium. ️ Air Air samples are collected using sorbent tubes or continuous sampling methods, then analyzed by GC-MS to identify specific compounds and concentrations. VOCs air monitoring is essential for: Controlling workplace air quality Assessing emission levels in and around industrial facilities Meeting occupational health and environmental regulations Water Because VOCs evaporate rapidly, water sampling demands airtight containers and careful handling to prevent loss before analysis. Using HSGC combined with GC-MS delivers precise results critical for: Evaluating water quality near industrial sites Assessing safety for consumption or discharge Supporting environmental impact assessments Soil In areas with a history of industrial activity, multi-point soil sampling ensures comprehensive coverage. Samples undergo SPE preparation before GC-MS analysis, providing data essential for: Long-term environmental risk assessment Contamination source identification Regulatory compliance and site remediation planning The Laboratory’s Role in Building ESG Credibility In the ESG framework — particularly under Environment and Governance — environmental data must be both accurate and traceable. This is where the laboratory becomes a strategic partner, not just a service provider. A credible accredited laboratory delivers: ✅ Rigorous quality control at every stage of analysis ✅ Calibrated instruments maintained to international standards ✅ Systematic documentation that creates a clear audit trail ✅ Results that hold up — whether submitted to regulators, included in ESG reports, or shared with investors and partners When VOCs data comes from a reliable, accredited source, it transforms from raw numbers into verifiable proof of environmental stewardship. Data That Means Something In the age of ESG, the numbers in your sustainability report are scrutinized more carefully than ever. They need to be: Accurate — reflecting what is actually happening in your operations Traceable — supported by documented methodology and chain of custody Credible — produced by laboratories recognized locally and internationally A concentration value is just a number. Verifiable, well-documented VOCs data is evidence — of accountability, of transparency, and of a genuine commitment to sustainability. Organizations that invest in rigorous VOCs analysis are not just checking a compliance box. They are building the data foundation that ESG credibility requires.  Learn more about VOCs analysis services:  www.alstesting.co.th/volatile-organic-compounds-vocs

Why Chemical Testing Is the Foundation of Credible ESG Reporting Numbers Only Matter If They Are Right Every organization calculating its Carbon Footprint is working toward the same goal: an accurate, credible, and defensible picture of its greenhouse gas emissions. But here is the question most overlook — How reliable is the data behind those numbers? Carbon Footprint reporting, as defined by frameworks like the GHG Protocol and ISO 14064, is fundamentally a calculation. It takes Activity Data — fuel consumed, waste generated, refrigerants used — and multiplies it by established Emission Factors to estimate total greenhouse gas output. The formula is standardized. The methodology is clear. But if the input data is inaccurate, even a perfectly executed calculation produces a misleading result. This is exactly where chemical testing becomes essential. What Is Chemical Testing — and What Does It Have to Do with Carbon? Chemical testing is the process of collecting and analyzing samples from environmental media — air, water, soil, waste streams, and process gases — using standardized methods and equipment. The goal is to determine concentration, composition, and potential impact on the environment, human health, or regulatory compliance. In the context of Carbon Footprint reporting, chemical testing is not about measuring carbon directly in a lab. Rather, it is about validating the quality of Activity Data — ensuring that what goes into the calculation actually reflects what is happening on the ground. Carbon Footprint is the calculation. Chemical testing is what makes the inputs worth calculating. Where Chemical Testing Makes a Real Difference In complex industrial operations, relying on generic averages or assumptions introduces significant margin for error. Chemical analysis replaces those assumptions with real, site-specific data: Table Application How It Improves Accuracy  Fuel Heating Value Analysis Uses actual calorific value instead of generic averages  Stack Gas Measurement (CO₂, CH₄, N₂O) Directly assesses combustion efficiency and emission rates  Wastewater COD Analysis Calculates methane generation potential from treatment systems ❄️ Refrigerant Identification (HFCs, PFCs) Ensures the correct Global Warming Potential (GWP) value is applied  Raw Material Composition Analysis Supports accurate Scope 3 emission assessments In each of these cases, chemical testing acts as a data verification layer — not replacing the Carbon Footprint calculation, but making the data that feeds it far more trustworthy. Why Data Integrity Is Non-Negotiable A Carbon Footprint report that earns stakeholder trust is not just mathematically correct — it is traceable, transparent, and verifiable. The factors that determine credibility go beyond the calculation itself: ✅ How Activity Data was collected and recorded ✅ Whether international standards are clearly referenced ✅ Internal quality control systems in place ✅ Transparency throughout the reporting process Within the broader ESG framework — particularly on the environmental and governance dimensions — verifiable data is the bedrock of long-term credibility. Investors, regulators, customers, and partners are increasingly asking not just “What is your carbon footprint?” but “How do you know?” More Than a Statistic — A Reflection of Who You Are The figures in a Carbon Footprint report represent far more than emissions data. They are a statement of organizational accountability and transparency. Choosing to ground your reporting in accurate, chemically verified data does two things at once: Reduces the risk of reporting errors that could damage credibility or invite regulatory scrutiny Builds a stronger foundation for long-term sustainability — one that holds up under audit, due diligence, and public disclosure In an era where ESG performance is increasingly tied to business reputation and investment attractiveness, the quality of your data is the quality of your commitment. The carbon numbers you report are only as strong as the data behind them. Make sure yours are built to last.  Learn more about ALS Testing’s Chemical Testing Services: https://www.alstesting.co.th/services/

The Invisible Threat in Every Factory Dust. Fumes. Chemical vapors. They are present in nearly every manufacturing environment — and most of the time, you cannot see them. As air pollution and industrial health concerns grow globally, workplace safety is no longer just a regulatory checkbox. Employees, business owners, and the public are paying closer attention to what workers breathe every day. Regulations are tightening. Standards are rising. And for good reason. In many production processes, the real danger is not the accident you can see — it is the hazard you cannot. Vapors released from solvents, paints, and adhesives Fine dust and particles generated from grinding, cutting, or friction Invisible residues and contaminants that accumulate on work surfaces over time None of these cause immediate, dramatic symptoms. But prolonged exposure quietly damages the respiratory system, the nervous system, and overall health — often before anyone realizes there is a problem. Factories that want to grow sustainably need tools that make these invisible risks visible. That is exactly what VOCs testing and FT-IR analysis are designed to do. Two Tests, One Powerful Combination VOCs Testing — What Is in the Air? VOCs (Volatile Organic Compounds) testing measures the concentration of airborne organic chemicals in the workplace — production floors, enclosed processing areas, and anywhere chemical use is involved. The results give factories clear, actionable intelligence:  Which areas carry the highest inhalation risk  When contamination levels spike above safe thresholds  Where to improve ventilation or adjust processes Perhaps most importantly, having real numbers eliminates uncertainty. When employees ask “Is the air here safe?”, management can answer with data — not reassurances. FT-IR Analysis — What Is That Dust? FT-IR (Fourier Transform Infrared Spectroscopy) takes a different but equally important angle. Rather than measuring air quality, it identifies the chemical identity of solid particles, residues, and contamination found in the workplace. FT-IR works by analyzing how a material absorbs infrared light — producing a unique chemical “fingerprint” for each substance. Even from a tiny sample, or from dust invisible to the naked eye, FT-IR can accurately identify: Plastics, rubber, and resins Fibers and polymer materials Chemical residues and unknown contaminants Knowing exactly what the dust is allows factories to: Pinpoint the true source of contamination Adjust production processes or switch to safer materials Reduce product defects and production waste Better Together VOCs and FT-IR are highly effective individually — but together, they provide a complete picture. Table VOCs Testing FT-IR Analysis Focus Air quality Particle & residue identity Answers What are workers breathing? What is this dust or contaminant? Key Benefit Health risk assessment Root cause identification   When used in combination, factories gain insight into both the air their people breathe and the materials their processes produce — enabling smarter, more targeted improvements across health, safety, and production quality. Long-Term Benefits That Go Beyond Compliance Better Production Quality When you know exactly where contamination comes from, you can control it. Fewer defects. More consistent output. Greater confidence from customers and partners. Lower Operating Costs Solving problems with precise data eliminates costly guesswork — less rework, fewer unplanned line stoppages, and less wasted raw material. A Workforce That Trusts You When employees see that air quality and contamination are being actively monitored, they feel valued — not overlooked. That trust translates into stronger engagement, fewer grievances, and lower turnover over time. Audit-Ready, Every Day VOCs and FT-IR results serve as verifiable, scientific documentation of systematic risk management — whether facing regulatory inspections, occupational health audits, or assessments from business partners and clients. From Invisible Risk to Informed Action — with ALS Testing Creating a truly safe workplace is not a one-time exercise. It is an ongoing commitment built on reliable data. By combining VOCs and FT-IR testing, factories can transform hidden risks into actionable insights — enabling precise adjustments to ventilation systems, material choices, and work procedures that protect both people and processes. ALS Testing — a globally accredited laboratory operating in Thailand — brings world-class VOCs and FT-IR testing to your doorstep. No overseas sample submissions. No complicated logistics. Just internationally standardized results that give your factory the clarity it needs to keep improving. Because workplace safety should not be a policy on paper. It should be part of how your business grows.

The Real Cost of Wrong Materials In industrial and construction projects, quality failures rarely announce themselves immediately. By the time a problem surfaces — a coating that peels, a sealant that cracks, a polymer that fails under load — the damage is already done, and the cost to fix it is exponentially higher than it would have been to prevent it. The most effective quality strategy is not inspection after the fact. It is verification at the source. That is precisely where FT-IR (Fourier Transform Infrared Spectroscopy) plays a decisive role — as a powerful, science-backed first line of quality control. What FT-IR Actually Does FT-IR is an analytical technique that identifies the chemical structure of a material by measuring how it absorbs infrared light. Each material produces a unique spectral “fingerprint,” revealing: What the material truly is — not just what it appears to be What chemical groups it contains Whether any chemical changes have occurred It does not measure structural strength or load-bearing capacity. What it does — with speed and precision — is confirm that the material in your hands is exactly what it is supposed to be. 10 Ways FT-IR Strengthens First-Line QC 1. Confirm Material Identity Before Use Is this epoxy, polyurethane, silicone, or something else entirely? FT-IR answers that question with certainty — preventing the wrong material from ever entering your process. 2. Filter Materials Before Expensive Testing Mechanical and safety testing is time-consuming and costly. FT-IR acts as the first gate, ensuring only chemically verified materials move forward — saving both time and resources. 3. Track Quality Consistency Across Production Lots The same product from different production batches is not always the same. FT-IR detects batch-to-batch variation, keeping quality consistent from project start to finish. 4. ⚠️ Detect Formula Changes or Unauthorized Substitutions If a supplier changes raw materials, reduces key components, or delivers an off-spec formulation, FT-IR will reveal the chemical difference — clearly and objectively. 5. ️ Assess Material Condition, Not Just Type FT-IR goes beyond identification. It can detect signs of thermal degradation, UV damage, or oxidation — providing early warning signals before a material fails in the field. 6. ️ Replace Guesswork with Science Many materials look identical to the naked eye. FT-IR eliminates reliance on visual inspection or experience alone, replacing assumptions with hard analytical evidence. 7. Reduce the Long-Term Cost of Failure Catching the wrong or degraded material at incoming inspection costs a fraction of what field failures, rework, or post-installation damage will demand. Prevention always pays. 8. Build a Traceable Quality Record FT-IR results are documented, verifiable, and traceable — serving as reliable technical evidence in quality disputes and informed decision-making for engineers and management alike. 9. ⚡ Fast, Non-Destructive, and Non-Disruptive Testing is rapid, requires minimal sample material, and does not interrupt production lines — making it perfectly suited for incoming inspection and routine spot checks. 10. A Smart First Step, Not the Final Word FT-IR is a precision screening tool, not a replacement for structural or safety testing. By confirming chemical suitability first, it makes every subsequent test more targeted, more meaningful, and more cost-effective. Where FT-IR Is Commonly Applied FT-IR delivers strong results for any material with a defined chemical composition — particularly where materials look similar but perform very differently: Table Material Category Why FT-IR Matters Coatings & Anti-Corrosion Products Verify formulation integrity before application Construction Adhesives & Sealants Confirm chemical type and detect substitution Polymers, Rubber & Damping Components Identify grade and detect degradation Insulation, Foam & Plastics Distinguish between visually similar materials Know the Limits FT-IR is a tool of precision — not a universal solution. It cannot replace structural load testing, crack detection, or engineering safety assessments. Those require dedicated mechanical and non-destructive testing methods. Used within its proper scope, however, FT-IR is one of the most efficient QC investments available. Why ALS Testing ALS Testing is an internationally accredited laboratory based in Thailand, delivering FT-IR analysis as part of a comprehensive, science-driven QC approach. When materials enter the process already verified for chemical identity, condition, and conformance, the entire quality system performs better: ✅ Fewer surprises downstream ✅ More targeted advanced testing ✅ Stronger documentation for technical and commercial decisions ✅ Lower risk of costly late-stage failures FT-IR with ALS Testing does not just check a box. It changes the way organizations think about quality — from reactive to proactive, from assumption to evidence, from risk to confidence. When first-line QC is right, everything that follows works better.

ICE vs. EV: A New Kind of Risk The shift from combustion engines (ICE) to electric vehicles (EV) changes more than the power source — it changes the entire risk profile. ICE systems fail through mechanical wear — predictable, repairable. EV systems fail through electrical faults and thermal instability — sudden, dangerous, and potentially irreversible. Even a few microns of contamination can trigger a battery short circuit, leading to thermal runaway — and potentially fire or explosion. Why ISO 16232 Now Matters for Safety The updated VDA 19.1 (3rd Edition, 2025), developed by 40+ leading automotive companies, elevates ISO 16232 from a quality standard to a functional safety requirement, introducing: Particle analysis below 50 microns SEM/EDX inspection techniques Standardized dry extraction methods Failure assessment for battery and electronic components How Contamination Causes EV Failures In high-voltage EV systems (400–800V), small conductive particles can cause: Short circuits Electrical arcing Insulation breakdown Leakage currents These failures occur without warning — making cleanliness a safety-critical design requirement, not just a quality checkpoint.   ICE vs. EV: Quick Comparison Table Factor ICE EV (High Voltage) Main Risk Mechanical wear Short circuit / Thermal instability Critical Particle Size > 100 µm < 50 µm Primary Impact Performance loss Arcing, insulation failure ISO 16232 Role Quality standard Functional safety standard ISO 16232 in the EV Supply Chain ISO 16232 is evolving from a measurement tool into a full process control framework: Cleanliness limits tied to failure mechanisms Integrated with PFMEA / DFMEA Supported by real-time monitoring and traceability The Road to Zero Contamination To stay competitive, organizations should: ✅ Embed cleanliness into product design from day one ✅ Invest in SEM/EDX and real-time inspection tools ✅ Build data-driven process controls ✅ Train personnel and foster a quality-first culture FAQ Why are small particles more dangerous in EVs? High-voltage systems have lower insulation tolerance. Particles under 50 µm can instantly cause short circuits and trigger thermal runaway. How does cleanliness relate to Functional Safety? Contamination can initiate electrical bridging and insulation failure — making it a direct concern under ISO 26262. Where should organizations start? Define cleanliness requirements based on failure mechanisms, then integrate them into design, manufacturing, and inspection — supported by SEM/EDX and traceability systems. What are the long-term benefits of compliance? Fewer recalls, reduced thermal and electrical failures, longer system lifespan, and stronger trust from OEM customers.

Introduction In the modern automotive industry, component precision and reliability are paramount — particularly with the growing adoption of intelligent braking systems, high-pressure fuel systems, and electric vehicles. One critical aspect often overlooked is technical cleanliness: the control of micron-level particles that can cause blockages, wear, and damage to critical systems, ultimately leading to costly product recalls. Establishing a Cleanliness Lab aligned with Tier 1 Automotive standards is therefore not merely a compliance requirement — it is a strategic risk management initiative. What is a Cleanliness Lab? A Cleanliness Lab is a controlled laboratory facility designed to assess the cleanliness of automotive components through particle extraction and analysis, ensuring contamination levels remain within defined specifications. For Tier 1 Suppliers, the lab functions as a quality gateway prior to OEM delivery — verifying product conformance, reducing rejection risk, and strengthening customer confidence. Applicable standards include ISO 16232 and VDA 19, both of which define systematic and reproducible testing methodologies. Organizations that meet these standards gain a competitive advantage within the global automotive supply chain. Laboratory Infrastructure Requirements Reliable test results depend on a well-designed facility. Key infrastructure elements include: Cleanroom controlled to ISO Class 5–8 HEPA filtration system to minimize airborne particle levels Positive pressure system to prevent external air ingress Segregated zones for sample preparation, extraction, and analysis One-way flow layout to minimize cross-contamination   Essential Equipment Equipment Function Significance Particle Extraction System Extracts particles from test components Core step of the testing process Microscope Analyzes particle size and morphology Enables detailed characterization Particle Counter Quantifies particle count Comparison against standard limits Vacuum Filtration Unit Filters test samples Prepares samples for analysis Laminar Flow Cabinet Controls local environment Reduces contamination risk         Standard Testing Workflow The cleanliness testing process comprises five core steps: Sample Collection Particle Extraction Filtration Analysis Reporting To ensure process reliability and integrity, the following must also be in place: Clearly defined Standard Operating Procedures (SOPs) Blank testing for quality control verification Process validation Traceability systems and data integrity controls Personnel Competency Despite advances in technology, personnel remain the most critical factor in Cleanliness Lab quality assurance. Required competencies include laboratory instrument operation, particle analysis techniques, and a working knowledge of ISO and VDA standards. Organizations must maintain continuous training, competency assessments, and periodic skill reviews. Human factors also represent a significant contamination risk — including improper gowning, deviation from SOPs, and inappropriate behavior within the cleanroom — all of which can directly compromise test accuracy and overall system reliability. Development Challenges Building a Cleanliness Lab presents several challenges: Capital investment for cleanroom construction and specialized equipment procurement Standard complexity requiring expert knowledge for accurate interpretation and implementation Upstream process control — an unstable manufacturing process limits the effectiveness of laboratory testing alone Organizations are advised to develop both manufacturing controls and laboratory capabilities concurrently to achieve sustainable Tier 1 compliance. Future Outlook: Smart Cleanliness Lab The next generation of cleanliness laboratories is evolving toward intelligent, automated systems, incorporating: AI-powered particle analysis Automated microscopy Real-time data connectivity Integration with manufacturing execution and quality management systems enables end-to-end quality control, reducing cycle time, improving result consistency, and supporting compliance with increasingly stringent industry standards. From Compliance to Competitive Advantage A Cleanliness Lab is not merely a testing facility — it is an integral component of a holistic quality management system, spanning product design, manufacturing, and delivery. Organizations that establish a fully compliant Cleanliness Lab will be well-positioned to meet OEM requirements, reduce long-term operational risk, and sustain competitiveness in the global automotive market. Investment in a Cleanliness Lab is an investment in long-term business sustainability. FAQ Is a Cleanliness Lab required for all manufacturing facilities? Not universally — however, it is essential for high-precision or safety-critical components, particularly in electric vehicle, electronics, and stringent-cleanliness applications. How should an organization begin? Conduct a Gap Analysis against ISO 16232 and VDA 19, then develop a structured implementation plan covering facility design, equipment, and process requirements. What is the estimated budget? Costs range from hundreds of thousands to several million baht, depending on lab scale, technology scope, and target compliance level. How long does implementation take? Typically 3–12 months, subject to organizational readiness and system complexity. What are common implementation mistakes? Inadequate facility design, unclear SOPs, insufficient personnel training, and failure to address upstream process control — resulting in test outcomes that do not reflect real-world conditions.  

Anion/Cation Analysis · Ion Chromatography · GCMS · ICP-MS · RoHS/REACH Compliance · PCB Testing ISO/IEC 17025 Accredited | Anion Test Specialist | Full Chemical Analytical Suite   The automotive industry’s shift toward electronics-intensive vehicle architectures, from advanced driver assistance systems (ADAS) to battery electric powertrains, has fundamentally changed the chemical testing requirements of automotive supply chains. Modern vehicles contain hundreds of electronic control units, kilometres of wiring, and sophisticated PCB assemblies whose reliability depends critically on chemical cleanliness, ionic contamination control, and compliance with global hazardous substance regulations. At the same time, automotive chemical testing encompasses traditional analytical disciplines that remain essential: trace element analysis by ICP-MS, organic compound identification by GCMS, REACH and RoHS substance screening, and the growing discipline of ion chromatography for ionic contamination measurement, the ‘anion test’ that has become a critical quality control tool for automotive electronics manufacturers. ALS Testing provides a comprehensive suite of chemical and electronics testing services, combining specialist ion chromatography capability with broad analytical chemistry capacity across ICP-MS, GCMS, FTIR, and regulatory compliance screening. With anion testing reaching search volumes of 210 per month in Malaysia – and no competitor currently offering well-developed content on this topic in the Malaysian market – ALS has a clear opportunity to establish content authority and capture this commercially significant keyword cluster. Ion Chromatography – Anion & Cation Analysis Ion chromatography (IC) is an analytical technique that separates and quantifies ionic species, both anions and cations, dissolved in an aqueous extract. In automotive and electronics testing, IC is applied to measure ionic contamination on component surfaces, in process fluids, and in assembly environments. The ‘anion test’ is shorthand for ion chromatography analysis of anionic species, has become one of the most widely applied quality control tests in automotive electronics manufacturing.     What Is Anion Testing? Anion testing by ion chromatography quantifies the concentration of negatively charged ionic species, particularly chloride (Cl⁻), fluoride (F⁻), sulfate (SO₄²⁻), nitrate (NO₃⁻), phosphate (PO₄³⁻), and a range of organic acid anions including acetate, formate, and oxalate, in an aqueous extract of a component or material. These anions are of critical concern in automotive electronics because many of them are aggressive corrosion initiators and electrolytic conductors that can cause: Electrochemical corrosion of metal conductors and contact surfaces Dendritic growth (metallic whisker growth between PCB conductors under voltage bias) Leakage current increase that triggers false signals in sensitive electronic circuits Delamination of PCB laminates and conformal coatings in the presence of moisture Accelerated corrosion of solder joints and connector contacts In automotive applications, the primary source of ionic contamination is residual flux from PCB soldering processes, particularly when no-clean flux residues are not fully removed or when water-soluble flux residues are inadequately cleaned. Process water, fingerprints, environmental deposition, and chemical exposure during manufacturing are secondary sources. Ion Chromatography Test Method – IPC-TM-650 2.3.28 / J-STD-001 The primary standard for ionic contamination testing of PCB assemblies is IPC-TM-650 Method 2.3.28, which defines the extraction method (a mixture of isopropyl alcohol and water applied to the PCB surface) and specifies the ion chromatography analysis for both anions and cations. The J-STD-001 standard (Requirements for Soldering Electrical and Electronic Assemblies) references cleanliness requirements that may require IC analysis for qualification. ALS conducts ionic contamination testing by IC to IPC-TM-650 2.3.28, providing results in µg/cm² for each ionic species identified, against the limits specified by the client’s cleanliness specification or OEM requirement. Results identify both the type and quantity of each ionic species, enabling manufacturers to verify compliance and infer potential root causes (such as chloride excess suggesting flux residue or organic acids suggesting flux decomposition products). Cation Analysis – Sodium, Potassium, Ammonium & Others In addition to anion analysis, ALS provides cation analysis by IC for the principal positively charged ionic species of concern in electronics: sodium (Na⁺), potassium (K⁺), ammonium (NH₄⁺), and the amines associated with no-clean flux formulations (particularly methylamine and triethanolamine, which are characteristic of amine-based flux activators). Elevated ammonium or amine concentrations can indicate inadequate removal of flux activator residues, which in combination with humidity can cause under-board corrosion and leakage current failures.          RoHS & REACH Compliance Testing The Restriction of Hazardous Substances (RoHS) Directive and the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) Regulation are the two most significant global regulatory frameworks governing chemical content in electrical and electronic products. Compliance with both is mandatory for automotive electronics products supplied to the EU market, and is increasingly required by global OEMs as a contractual supply chain requirement regardless of the target market. RoHS Compliance Screening – IEC 62321 Series The RoHS Directive restricts the use of six hazardous substances in electrical and electronic equipment: lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr(VI)), polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE). RoHS 2 (Directive 2011/65/EU and its amendments) added four phthalates (DEHP, BBP, DBP, and DIBP), making ten restricted substances in total. ALS provides RoHS compliance screening to the IEC 62321 series of test methods, which defines the analytical methods for determination of each restricted substance group. Screening begins with X-ray fluorescence (XRF) screening for elemental species (Pb, Hg, Cd, Cr) and proceeds to confirmatory quantitative analysis by ICP-MS or ICP-OES where XRF screening indicates potential exceedance. Hexavalent chromium is determined specifically by UV-Vis spectrophotometry, and phthalates are determined by GCMS. REACH – SVHC Screening The REACH regulation requires declaration of substances of very high concern (SVHC) in articles above a concentration threshold of 0.1% w/w, when the SVHC concentration exceeds 0.1% in the article as a whole. The SVHC candidate list, published by the European Chemicals Agency (ECHA) and updated regularly, now contains over 230 substances, including phthalates, heavy metals, aromatic amines, certain polymers, and flame retardants. ALS provides targeted SVHC screening for the substances most commonly encountered in automotive materials and electronic components, using appropriate analytical methods including XRF, ICP-MS, GCMS, and IC. GCMS – Organic Chemical Analysis Gas chromatography-mass spectrometry (GCMS) is the primary analytical tool for identification and quantification of organic compounds, including solvents, plasticisers, flame retardants, process chemicals, and contaminants in automotive materials and components. In automotive chemical testing, GCMS is applied across a range of programmes. GCMS Applications in Automotive Testing VOC and SVOC emissions analysis: GCMS is the detection method used in thermal desorption analysis to VDA 278 and ISO 12219, providing a detailed compound-by-compound profile of organic emissions from interior materials. Contaminant identification: when unknown organic contaminants are found on component surfaces, in lubricants, or in process fluids, GCMS compound identification provides the molecular-level identification needed for source investigation and corrective action. Phthalate analysis for RoHS compliance: GCMS is the confirmatory method for determination of phthalates (DEHP, BBP, DBP, DIBP) in materials screened initially by XRF. Solvent and process chemical residue analysis: GCMS identifies residual solvents and cleaning agents on component surfaces after cleaning processes, providing evidence of adequate cleaning or contamination by inappropriate process chemicals. ICP-MS & ICP-OES – Trace Element Analysis Inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrometry (ICP-OES) are the premier techniques for trace and ultra-trace elemental analysis in automotive materials, process fluids, and environmental samples. These techniques provide multi-element analysis at concentrations from percentage levels (ICP-OES) down to parts per trillion (ICP-MS) in dissolved samples, making them essential tools for restricted element screening, material composition verification, and contamination source tracing. Trace Element Analysis Applications RoHS element screening: ICP-MS and ICP-OES provide confirmatory quantitative analysis for lead, mercury, cadmium, and total chromium in materials where XRF screening has indicated potential RoHS exceedance. Automotive fluid analysis: engine oils, coolants, hydraulic fluids, and gear lubricants are analysed by ICP-OES for wear metals (iron, copper, aluminium, chromium), additive elements (zinc, phosphorus, molybdenum), and contaminant elements as part of condition monitoring and failure investigation programmes. Material composition verification: ICP analysis confirms the elemental composition of alloys, platings, and surface treatments against specified composition limits. Environmental sample analysis: ALS applies ICP-MS to environmental water and soil samples in support of automotive manufacturing facility environmental monitoring and regulatory compliance programmes. PCB & Electronics Component Testing Automotive electronics components, including PCBs, connectors, sensors, power modules, and wire harness assemblies, are subject to some of the most demanding chemical cleanliness and material compliance requirements in the electronics industry. The consequences of chemical contamination in automotive safety systems, powertrain controls, or battery management electronics are severe, ranging from intermittent operation through to complete functional failure in safety-critical systems. PCB Ionic Contamination Testing Ion chromatography analysis of PCB ionic contamination (IPC-TM-650 2.3.28) is described in detail in the Ion Chromatography section above. ALS provides this as a standard service for automotive PCB manufacturers and assemblers, supporting both production quality control and OEM qualification requirements. Solderability Testing Solderability testing evaluates the wettability of component leads, PCB pads, and solder surfaces, specifically the ability of liquid solder to spread uniformly across a surface. Poor solderability leads to cold solder joints, dewetting, and non-wet opens, which are a significant source of early-life failures in automotive electronics. ALS provides solderability testing by wetting balance (J-STD-002) and dip-and-look methods (IPC-TM-650 2.4.12) to support incoming component qualification and process control. Conformal Coating Inspection & Analysis Conformal coatings applied to automotive PCBs provide protection against moisture, contamination, and mechanical stress. ALS provides analysis of conformal coating composition by FTIR to verify coating type, cross-section analysis by optical and scanning electron microscopy to assess coating thickness and uniformity, and adhesion testing to evaluate bonding integrity of the coating to the PCB surface. These tests support both coating process validation and investigation of coating failures in field-returned assemblies. Standards & Test Methods Standard / Method Technique Application IPC-TM-650 2.3.28 Ion Chromatography (IC) PCB ionic contamination – anion and cation analysis J-STD-001 Multiple Soldering cleanliness requirements – references IC for qualification IEC 62321-1 to -8 XRF, ICP-MS, ICP-OES, GCMS, UV-Vis RoHS restricted substance screening and confirmatory analysis REACH SVHC XRF, ICP-MS, GCMS, IC SVHC substance screening in automotive materials and articles VDA 278 Thermal Desorption GCMS VOC and FOG emissions from interior materials – German OEM ISO 12219 Chamber / GCMS Interior air VOC analysis – international standard ISO/IEC 17025 Quality Management System Accreditation framework for all ALS analytical methods ICP-MS / ICP-OES Elemental Analysis Trace element quantification – fluids, materials, coatings GCMS (Full Scan / SIM) Organic Compound ID & Quantification Contaminant ID, RoHS phthalates, VOC analysis J-STD-002 Wetting Balance Solderability testing – component leads and PCB pads   Why ALS for Chemical & Electronics Testing? Specialist in Ion Chromatography – Anion Test Leader in Malaysia ALS Testing offers one of the most comprehensive ion chromatography capabilities in the Malaysian testing market, covering the full range of ionic species relevant to automotive electronics quality control: fluoride, chloride, nitrite, phosphate, sulfate, acetate, formate, oxalate, and the organic acid anions characteristic of no-clean flux residue. Our IC capability covers both anion and cation analysis in a single analytical run, providing a complete ionic profile from a single sample extraction. With anion test searches at 210 per month in Malaysia and no competitor currently providing a well-developed digital resource on this topic, ALS is positioned to be the definitive reference for automotive electronics manufacturers in the region seeking ion chromatography testing services. Full Analytical Suite Under One Roof Rather than working with multiple specialist laboratories for different analytical disciplines, ALS clients benefit from access to our full analytical suite: IC, ICP-MS, ICP-OES, GCMS, FTIR, SEM-EDX, and XRF under a single ISO/IEC 17025 accredited quality management system. This simplifies sample management, reduces logistics complexity, and ensures consistency of sample handling across all analytical techniques applied to the same investigation. Automotive Context & Application Knowledge Chemical analysis in automotive applications requires more than analytical technique proficiency; it requires understanding of where contamination comes from, why it matters in context, and how analytical results translate into manufacturing and quality decisions. ALS analysts have experience in automotive manufacturing environments and understand the quality questions that drive testing requests. This enables us to provide results and interpretations that are directly actionable, rather than raw analytical numbers that require translation. Frequently Asked Questions – Chemical & Electronics Testing Q: What is an anion test and why is it important for PCB manufacturing? An anion test is ion chromatography (IC) analysis of ionic contamination on a PCB or electronic component surface, specifically targeting negatively charged ionic species including chloride, fluoride, sulfate, nitrate, phosphate, and organic acid anions. These anions are important in PCB manufacturing because they are the primary ionic contaminants that cause electrochemical corrosion, dendritic growth, and leakage current failures in PCB assemblies, particularly in humid environments. The anion test is conducted to IPC-TM-650 Method 2.3.28 and provides results in µg/cm², comparable to OEM or IPC cleanliness acceptance limits. Q: What is the difference between RoHS and REACH, and does ALS test for both? RoHS (Restriction of Hazardous Substances Directive) restricts the use of ten specific hazardous substances in electrical and electronic equipment placed on the EU market: six original substances (lead, mercury, cadmium, hexavalent chromium, PBB, PBDE) plus four phthalates added by RoHS 2. REACH is a broader chemical regulation requiring identification and communication of substances of very high concern (SVHC) in articles. The SVHC candidate list contains over 230 substances. ALS provides compliance screening for both RoHS and REACH, using appropriate analytical methods for each substance category. We can provide a combined RoHS and REACH SVHC screening programme from a single sample submission. Q: Can ALS identify unknown contaminants on automotive components? Yes. Unknown contaminant identification is one of our most commonly requested analytical services. Our approach typically begins with FTIR analysis to identify organic contaminants and provide a rapid initial classification. SEM-EDX is applied to characterise the morphology and elemental composition of inorganic contaminants or particles. GCMS provides definitive molecular identification of organic species when FTIR yields an ambiguous or incomplete result. ICP-MS can quantify trace elements in dissolved contaminants. By applying this suite of techniques in sequence, ALS can identify the chemical nature and likely source of most contaminants encountered in automotive manufacturing environments. Q: How do I interpret ion chromatography results for my PCB cleanliness specification? IC results for PCB ionic contamination are typically expressed as µg/cm² of each ionic species, calculated from the total extracted mass divided by the board surface area analysed. These results are compared against the cleanliness acceptance limit specified by your OEM, your customer’s specification, or a standard such as IPC-7711. Common acceptance limits range from 0.2 µg/cm² to 1.56 µg/cm² for total ionic contamination, depending on the application’s criticality. Our report will state the measured concentration of each ionic species and compare it against your specified limit to provide a clear technical conclusion regarding compliance. If you need guidance on interpreting results or selecting appropriate cleanliness limits for your application, our technical team is available to advise. Q: Does ALS provide GCMS analysis for VOC testing as well as RoHS phthalate screening? Yes. Our GCMS capability covers both applications and more. For VOC/FOG emissions analysis, GCMS is the detection method used in thermal desorption analysis to VDA 278, providing compound identification and quantification of organic emissions from automotive interior materials. For RoHS phthalate screening, GCMS is the confirmatory analytical method applied after XRF screening for samples that require quantitative phthalate determination. Additionally, GCMS is applied to unknown contaminant identification, solvent residue analysis, process chemical characterisation, and environmental sample analysis. Our GCMS systems operate in full-scan mode for compound identification and selected ion monitoring (SIM) mode for trace-level quantification. Request a Chemical & Electronics Testing Quote From anion/cation analysis of PCB assemblies to RoHS compliance screening, GCMS contaminant identification, and ICP-MS trace element analysis, ALS Testing provides the chemical and electronics testing services that automotive electronics manufacturers in Malaysia and Southeast Asia require. Our ISO/IEC 17025 accredited results are accepted by global OEMs, and our specialist ion chromatography capability makes us the leading choice for automotive ionic contamination testing in the region. → Request a Quote: https://www.alstesting.co.th/request-a-quote/ → Back to Automotive Testing Hub: /automotive-testing/ ISO/IEC 17025 Accredited  |  Ion Chromatography Specialist  |  RoHS + REACH + Anion/Cation Testing

ISO/IEC 17025 Accredited | Cleanliness · Failure Analysis · Materials · Chemical Testing ISO 17025 Accredited | ILAC MRA  | 40+ Years Global Network Every automotive component failure begins with something invisible: contamination, material degradation, or an undetected defect. In today’s automotive manufacturing landscape, where tolerance for error is measured in microns and regulatory pressure increases with every new model cycle, the stakes of unvalidated components have never been higher. Manufacturers across Malaysia and Southeast Asia face mounting pressure from multiple directions: more complex EV platforms, tighter OEM specification requirements, increasingly stringent chemical and emissions standards, and supply chains that span continents. A single undetected particle in a hydraulic system, a material that off-gasses beyond permissible limits, or a PCB with ionic contamination that escapes to field conditions. All of these can trigger warranty claims, production shutdowns, and reputational damage that far exceeds the cost of proper testing.   ALS Testing is an independent, ISO/IEC 17025 accredited third-party laboratory providing comprehensive automotive testing services to OEMs, Tier-1 and Tier-2 suppliers, and automotive electronics manufacturers throughout Malaysia and Southeast Asia. With over 40 years of global experience across the ALS network and deep local expertise in the Malaysian and regional automotive market, ALS delivers the precision, objectivity, and internationally recognised results that modern automotive manufacturers require. Explore our full range of automotive testing services below, from technical cleanliness and failure analysis to materials testing and chemical compliance screening. What Is Automotive Testing? Automotive testing is the systematic evaluation of materials, components, sub-assemblies, and complete vehicle systems to verify that they meet defined performance, safety, chemical, and regulatory specifications. It spans the entire manufacturing lifecycle, from raw material qualification through prototype validation, production quality control, and field failure investigation. In scope, automotive testing covers a broad spectrum of disciplines: physical and mechanical testing of materials and structures; chemical analysis of coatings, fluids, and polymer compounds; cleanliness and contamination analysis of precision components and hydraulic systems; failure analysis of components returned from field or production; and environmental simulation testing to assess durability under real-world conditions including temperature cycling, humidity, corrosion, and vibration. Testing can be classified in several ways. Destructive testing involves irreversible analysis (cross-sections, chemical extraction, or mechanical fracture testing) and yields the most detailed information about a component’s internal structure and material composition. Non-destructive testing (NDT) allows a component to be evaluated and returned to service, using techniques such as SEM imaging, X-ray inspection, or particle extraction. Testing can also be categorised by regulatory purpose: type approval testing confirms conformance to legal and OEM requirements for production intent components, while R&D testing supports early-stage development, material selection, and process optimisation. Why Independent Automotive Testing Matters Independent, third-party laboratory testing plays a central role in modern automotive manufacturing for three critical reasons. First, regulatory and OEM acceptance: the vast majority of global OEMs require testing results from ISO/IEC 17025 accredited independent laboratories. In-house test reports, regardless of the sophistication of the equipment, are typically not accepted as compliance evidence for OEM approval processes, type approvals, or regulatory submissions. Accredited laboratory results carry a level of traceability and methodological rigour that in-house testing cannot formally provide. Second, liability protection: when a component or material is tested by an independent laboratory, the test report provides documented, objective evidence of compliance at the time of manufacture. This evidence is critical in the event of warranty claims, product liability disputes, or regulatory investigations. An independent report reduces risk exposure for suppliers and protects against unjustified claims. Third, objectivity and confidence: there is no conflict of interest in third-party testing. ALS operates independently of its clients and has no stake in any particular test outcome. Our results reflect reality, which is exactly what manufacturers, regulators, and end customers require. ALS provides all of the above, with 40+ years of global expertise and a local team who understands the nuances of the Malaysian and Southeast Asian automotive supply chain. Automotive Testing vs In-House Testing: Key Differences The question of whether to conduct testing in-house or to outsource to a contract testing laboratory is one that many automotive suppliers face, particularly as they scale up production volumes or seek new OEM approvals. The decision involves multiple dimensions beyond simple cost comparison. Dimension In-House Testing Third-Party Lab (ALS) Accreditation Typically not ISO/IEC 17025 accredited ISO/IEC 17025:2017 accredited – ILAC MRA recognised OEM Acceptance Often not accepted for formal approval Accepted by global OEMs and regulatory bodies Equipment Scope Limited to owned equipment Full analytical suite: SEM, FTIR, EDX, ICP, GC-MS and more Objectivity Potential conflict of interest Fully independent – no stake in outcome Cost Structure High fixed capex + maintenance Variable cost – pay per test Turnaround Internal queues and priorities Dedicated testing workflow Regulatory Use Internal QC only Type approval, OEM submission, regulatory compliance   For most suppliers, the most effective approach is a combination: in-house QC for routine production monitoring, with outsourced third-party testing for OEM submissions, qualification testing, failure investigations, and regulatory compliance. ALS functions as a natural extension of your quality team in this hybrid model. Our Automotive Testing Services ALS Testing offers a comprehensive range of automotive testing services, with particular expertise in cleanliness testing and failure analysis, where many regional laboratories fall short. Our services are structured around five integrated disciplines that cover the full spectrum of automotive testing requirements, from component-level contamination analysis to environmental simulation and chemical compliance screening. Cleanliness & Particle Testing (ISO 16232 / VDA 19) ALS specialises in technical cleanliness testing to ISO 16232 and VDA 19, a capability that few laboratories in Malaysia and Southeast Asia can match. Our cleanliness testing services provide manufacturers of precision hydraulic components, fuel system parts, transmission assemblies, and braking system components with quantitative evidence that their products meet defined cleanliness classes. Testing includes extraction of particles from component surfaces and channels, gravimetric analysis for mass-based cleanliness assessment, light obscuration particle counting (LPC) for size distribution and particle count, and microscopic analysis of extracted particles for material identification. This is one of ALS’s strongest competitive differentiators in the Malaysian market, a capability that competitors including SIRIM and Bureau Veritas do not offer at the same level of depth. → Explore our Cleanliness & Particle Testing services: ISO 16232 and VDA 19 cleanliness testing Failure Analysis (SEM / FTIR / EDX) Our failure analysis team uses scanning electron microscopy (SEM), FTIR spectroscopy, EDX elemental analysis, and cross-section preparation to identify the root causes of automotive component failures. Whether the failure originated in manufacturing, material selection, processing, or field conditions, our analysts have the tools and experience to trace it to its origin. Failure analysis is applied across a wide range of scenarios: fracture surface analysis to determine whether a failure was fatigue-related, overload-driven, or corrosion-initiated; contaminant identification on component surfaces; delamination and adhesion failure analysis; and investigation of field returns from OEM warranty programmes. With scanning electron microscopy analysis reaching search volumes of 260 searches per month in Malaysia alone, this is one of the most commercially significant services in our portfolio. → Explore our Failure Analysis services: SEM, FTIR, and EDX failure analysis Automotive Materials & Environmental Testing From VOC emissions testing to ISO 12219 and VDA 278 through to salt spray corrosion testing to ISO 9227 and ASTM B117, and thermal shock simulation to IEC 60068. ALS validates that your materials and components survive the demands of real-world automotive use. Our materials and environmental testing services support material qualification, OEM specification compliance, and regulatory approval for automotive interior and exterior components. Key capabilities include volatile organic compound (VOC) analysis for automotive interior air quality compliance, semi-volatile organic compound (SVOC) screening, fogging testing to ISO 6452, salt spray and humidity testing for corrosion resistance evaluation, and thermal cycling and vibration testing for durability qualification. The combined search volume for VOC and salt spray testing keywords in Malaysia exceeds 430 searches per month, reflecting strong commercial demand for these capabilities. → Explore our Materials & Environmental Testing services: VOC emissions testing and salt spray Chemical & Electronics Testing ALS provides anion and cation analysis by ion chromatography, GCMS trace chemical analysis, ICP-MS elemental analysis, RoHS and REACH compliance screening, and ionic contamination testing for PCB assemblies and automotive electronics components. Our chemical testing services support automotive electronics manufacturers in meeting the increasingly stringent chemical requirements of global OEM supply chains and international regulatory frameworks. With anion testing search volumes of 210 per month in the Malaysian market, with no competitor currently offering a well-developed content resource on this topic. ALS has a clear opportunity to establish authority in this niche. Our ion chromatography capabilities cover the full range of ionic species relevant to automotive electronics: chloride, fluoride, sulfate, phosphate, and organic acid anions. → Explore our Chemical & Electronics Testing services:  anion and cation analysis by ion chromatography Industries We Serve ALS Testing works with manufacturers, suppliers, and engineering teams across the full automotive value chain. Our accredited testing services are designed to meet the specific needs of each customer segment, from globally operating OEMs with complex multi-standard testing requirements to local Tier-2 suppliers seeking a reliable laboratory partner for production qualification. OEM & Tier-1 Automotive Suppliers For OEMs and Tier-1 suppliers, ALS provides component validation testing, type approval support, and testing to OEM-specific standards including BMW GS specifications, Ford WSS standards, Toyota TSM requirements, and general group standards from major European, American, and Japanese automotive manufacturers. Our ISO/IEC 17025 accreditation ensures that results are accepted without question at OEM technical centres worldwide. Whether you require cleanliness class certification for a hydraulic valve body, failure analysis of a returned warranty component, or VOC emissions testing for interior trim materials, ALS has the capability and accreditation to support your supply chain quality requirements. Electric Vehicle (EV) Manufacturers & Suppliers As EV adoption accelerates across Southeast Asia, driven by government incentive programmes in Malaysia, Thailand, Indonesia, and Vietnam. ALS supports EV manufacturers and their supply chains with battery component cleanliness testing, thermal management material analysis, electric motor component failure investigation, and chemical analysis of battery electrolytes and electrode materials. The unique testing challenges posed by EV platforms, from the cleanliness requirements of high-voltage battery assemblies to the ionic contamination risks in power electronics, map directly to ALS’s core competencies in cleanliness testing and chemical analysis. We are building our EV testing capability now to serve this rapidly growing market segment. Automotive Electronics & PCB Manufacturers From ionic contamination testing and anion/cation analysis by ion chromatography, through to RoHS/REACH compliance screening and solderability testing, ALS supports automotive electronics manufacturers with the precise chemical and reliability analysis that modern automotive electronics programmes demand. Automotive electronics are subject to some of the most stringent chemical cleanliness requirements in the electronics industry, driven by the safety-critical nature of automotive control systems. Automotive Materials & Polymer Suppliers ALS tests automotive-grade plastics, rubbers, foams, adhesives, coatings, and composite materials for VOC and SVOC emissions, restricted substance compliance, chemical resistance, and mechanical performance to VDA, ISO, and OEM specifications. Whether you supply instrument panel materials, headliner fabrics, underbonnet polymers, or structural adhesives, ALS can provide the testing evidence your OEM customers require. Standards & Accreditations Trust in laboratory testing results rests on a foundation of documented accreditation, methodological rigour, and equipment traceability. ALS Testing is accredited to ISO/IEC 17025:2017, the international standard for the competence of testing and calibration laboratories, by an accreditation body that is a signatory to the ILAC Mutual Recognition Arrangement (MRA). ISO/IEC 17025:2017 Accreditation ALS Testing is accredited to ISO/IEC 17025:2017, with results recognised under the ILAC MRA across more than 100 countries. This means that test reports issued by ALS are accepted by OEMs, regulatory bodies, and government agencies worldwide without the need for re-testing. The ILAC MRA is the global framework that enables laboratory results to cross borders with confidence, which is essential for automotive supply chains that operate across multiple markets. Our accreditation covers a defined scope of tests, with accredited test methods listed in our schedule of accreditation available from our accreditation body. For any test conducted within our accredited scope, our reports carry the formal ILAC MRA mark, confirming that the result was produced under a quality management system that meets the highest international standards for laboratory competence. Key Automotive Standards We Test To ALS testing capabilities span the major international and OEM-specific standards that govern automotive material, component, and electronics testing. The following table provides a reference overview of the key standards applied across our automotive testing scope. Standard Full Name Category Applied In ISO 16232 Road Vehicles – Cleanliness of Components Cleanliness Testing Hydraulic, fuel, braking systems VDA 19 Testing of Technical Cleanliness Cleanliness Testing Precision components – German OEM standard VDA 278 Volatile Organic Compounds from Non-metallic Materials VOC / Emissions Automotive interior air quality ISO 12219 Interior Air of Road Vehicles VOC / Emissions Cabin VOC and SVOC measurement VDA 275 Formaldehyde Emission – Photometric Analysis Chemical Emissions Interior materials – formaldehyde ISO 9227 Corrosion Tests – Salt Spray Apparatus Environmental / Corrosion Metal components, coatings, fasteners ASTM B117 Salt Spray (Fog) Apparatus Environmental / Corrosion General corrosion testing – US standard IEC 60068 Environmental Testing for Electronic Products Environmental Simulation Automotive electronics components IPC-TM-650 Test Methods Manual – PCB & Electronics Electronics Testing PCB ionic contamination, solderability REACH Registration, Evaluation, Authorisation of Chemicals Chemical Compliance Restricted substances – EU directive RoHS Directive Restriction of Hazardous Substances Chemical Compliance Electronics – hazardous substance limits   Why Choose ALS Testing? In a market where testing laboratories are not in short supply, the quality of the laboratory you choose to partner with has direct consequences for your OEM relationships, your regulatory compliance posture, and your ability to respond to product quality issues quickly and with confidence. ALS Testing differentiates itself across four key dimensions that matter most to automotive manufacturers. Specialist in Cleanliness & Failure Analysis ALS Testing brings specialist-level expertise in automotive cleanliness testing to ISO 16232 and VDA 19, and failure analysis using SEM, FTIR, and EDX, capabilities that few laboratories in Malaysia can match at this depth. While major competitors in the Malaysian market offer general testing services, cleanliness testing and advanced failure analysis require specialised equipment, methodological experience, and analysts who understand automotive manufacturing processes. ALS has invested in building this expertise, and it represents our strongest point of competitive differentiation in the regional market. ISO/IEC 17025 Accredited – Globally Recognised Results Our accredited test reports are accepted by OEMs and regulatory authorities across more than 100 countries under the ILAC MRA, giving you confidence in every result and eliminating the risk of results being rejected by your customer’s technical approval team. When you submit an ALS test report in support of an OEM qualification, a type approval application, or a regulatory submission, you are submitting a document that carries internationally recognised weight. Part of a 40+ Year Global Testing Network As part of the ALS global network, one of the world’s leading testing, inspection, and certification organisations, we combine world-class laboratory capabilities with deep local knowledge of the Malaysian and Southeast Asian automotive market. The ALS global network provides access to specialised testing capabilities, technical expertise, and reference resources that simply are not available at standalone regional laboratories. For automotive manufacturers with testing requirements that extend beyond our local scope, the global ALS network provides seamless access to the same quality standards in other markets. Fast Turnaround & Responsive Technical Support We understand that testing delays cost money. Production holds, delayed OEM submissions, and extended field investigation timelines all have real financial consequences. Our team is structured to provide fast turnaround times and proactive communication from the moment of sample receipt through to the delivery of your final test report. We treat every sample as if a production decision depends on it, because it often does. Frequently Asked Questions (FAQ) Q: What automotive testing services does ALS offer? ALS Testing provides five core categories of automotive testing services (1) Technical Cleanliness & Particle Testing to ISO 16232 and VDA 19;  (2) Failure Analysis using SEM, FTIR, EDX, and cross-section analysis;  (3) Automotive Materials & Environmental Testing including VOC, salt spray, and thermal simulation;  (4) Chemical & Electronics Testing including ion chromatography, GCMS, and RoHS/REACH compliance; and  (5) the full Automotive Testing Hub encompassing all of the above with OEM-standard test methods. Contact our team or visit the relevant service page for a detailed capability list. Q: Is your laboratory accredited for automotive testing? Yes. ALS Testing is accredited to ISO/IEC 17025:2017. Our test reports carry the ILAC MRA mark and are recognised by OEMs and regulatory bodies in more than 100 countries worldwide. Accreditation to ISO/IEC 17025 is the international gold standard for laboratory competence, and it means that every test result we produce has been generated under a formally validated quality management system with documented traceability to national and international measurement standards. Q: Do you serve clients in Malaysia and other countries in the region? Yes. ALS Testing primarily serves clients in Malaysia, and we also support manufacturers and suppliers in Thailand, Singapore, Indonesia, Vietnam, and other markets across Southeast Asia. Our ISO/IEC 17025 accreditation, recognised under the ILAC MRA, means that our test reports are accepted across all major global markets. For samples shipped from outside Malaysia, please contact us to discuss logistics and sample submission requirements. Q: Can you test to OEM-specific standards such as BMW, Toyota, or Ford specifications? Yes. ALS has experience with a range of OEM-specific test standards in addition to international standards such as ISO, VDA, and IEC. Please contact us with your specific requirements, including the OEM specification number and revision, and our technical team will confirm our capability and advise on the appropriate test method. For standards outside our current scope, we will advise whether the test can be conducted under the ALS global network. Q: How do I submit samples and obtain a quote? The process is straightforward (1) Contact our team via the enquiry form at /contact/ or by telephone, providing details of the component, the test required, and the standard or specification;  (2) Our technical team will provide a quotation and sample submission instructions;  (3) Ship or deliver your samples to our laboratory;  (4) Testing is conducted and your report is issued electronically. For urgent requirements, please indicate this when making contact and we will advise on expedited options. Q: What is the typical turnaround time for automotive testing? Turnaround times vary depending on the test type, sample preparation requirements, and current laboratory workload. Simple chemical analyses may be completed within two to five business days, while complex failure analysis or multi-test programmes may require one to three weeks. Please contact our team when submitting your enquiry and we will provide a specific timeline estimate for your requirements. We also offer expedited service for time-critical investigations; please ask about this option if your situation requires faster results. Request an Automotive Testing Quote Ready to discuss your automotive testing requirements? Whether you need cleanliness certification for a precision component, a root cause failure analysis, VOC emissions testing for interior materials, or a comprehensive multi-test qualification programme, ALS Testing’s specialists are here to help, from initial sample submission guidance through to delivery of your final test report. Our team makes the process simple. Tell us what you need, and we will provide a clear quotation, sample submission instructions, and a realistic timeline. For complex programmes, we can arrange a technical discussion to ensure that the test plan is fully aligned with your OEM or regulatory requirements. → Request a Quote: https://www.alstesting.co.th/contact-us/  → Download Automotive Testing Capability Brochure ISO/IEC 17025:2017 Accredited  |  Results trusted by OEMs worldwide  |  ILAC MRA Recognised  

VOC Emissions · Salt Spray Corrosion · Thermal Testing · Interior Air Quality · VDA 278 · ISO 9227 ISO/IEC 17025 Accredited | Full Environmental Simulation Suite | OEM Standard Testing The materials that make up a modern automobile are subjected to conditions that most materials would never encounter: temperature extremes from −40°C to +120°C and beyond; salt-laden road spray that attacks every exposed metal surface; UV radiation that degrades polymers and fades pigments; humid tropical heat that accelerates corrosion and swells seals; and the constant off-gassing requirements of interior materials that affect the air quality cabin occupants breathe every day. Automotive materials testing, which encompasses VOC emissions analysis, corrosion testing, environmental simulation, thermal characterisation, and chemical content analysis, validates that materials and components survive these conditions and meet the specifications that OEMs and regulations define. With combined search volumes exceeding 430 searches per month in Malaysia for VOC and salt spray testing alone, this is one of the most commercially active testing categories in the regional automotive market. ALS Testing is accredited to ISO/IEC 17025:2017 and offers a comprehensive range of automotive materials and environmental testing services, covering the key standards that govern material qualification for Malaysian and global automotive supply chains. Critically, ALS currently has no content covering VOC testing – the highest-volume keyword in our portfolio – making this Pillar Page a priority content investment.   VOC Emissions Testing for Automotive Interior Materials Volatile organic compound (VOC) emissions from automotive interior materials are a significant concern for both regulatory compliance and consumer experience. Interior materials including instrument panels, headliners, seat foams, carpets, door trim panels, adhesives, and sealants all contribute to the volatile chemical environment inside the vehicle cabin. Elevated VOC concentrations in new vehicles have been associated with health concerns, including irritation, headache, and in extreme cases, sensitisation, and are subject to increasingly stringent OEM specifications and, in some markets, regulatory limits. Automotive VOC testing is governed by several key standards that specify the test method, temperature conditions, sampling duration, and analytical approach. ALS provides testing to the primary automotive VOC standards required by global OEMs.   VDA 278 – Thermal Desorption Analysis of Automotive Interior Materials VDA 278 is the German automotive industry standard for analysis of organic emissions from automotive interior components using thermal desorption GC-MS. The standard defines two heating stages: 90°C for VOC determination (volatile organic compounds) and 120°C for FOG determination (semi-volatile high-boiling condensable compounds, applied to a small sample of the material under controlled conditions. The emitted compounds are collected on a Tenax sorbent tube, thermally desorbed, and analysed by gas chromatography-mass spectrometry (GC-MS) to provide a quantitative profile of organic emissions. VDA 278 is required by German OEMs (BMW, Volkswagen Group, Mercedes-Benz, Audi) and their Tier-1 suppliers, and is widely adopted across the global automotive supply chain. It provides quantitative data for comparison against specified emission limits for individual compounds and compound groups, typically expressed in µg/g of material. ISO 12219 – Interior Air of Road Vehicles ISO 12219 is the international standard series covering the measurement of VOC concentrations in vehicle interiors. The standard defines test methods for measuring VOC concentrations in the cabin air of complete vehicles (ISO 12219-1, bag method) and for emissions from individual interior components (ISO 12219-2 to ISO 12219-7, covering various chamber and micro-chamber methods). ALS provides component-level VOC testing to the ISO 12219 chamber methods, enabling material qualification against OEM VOC specifications defined under this standard. VDA 275 – Formaldehyde Emission Testing Formaldehyde is a specific VOC of regulatory and health concern, subject to dedicated test methods and specific emission limits in many OEM specifications. VDA 275 specifies a bottle method for determination of formaldehyde emissions from automotive interior non-metallic materials, using photometric analysis of the extracted formaldehyde. ALS provides formaldehyde testing to VDA 275 as part of our VOC testing capability, enabling clients to meet the specific formaldehyde limits defined by German and other OEMs. ISO 6452 – Fogging Testing Fogging testing determines the propensity of automotive interior materials to produce condensable vapours that deposit on the vehicle windscreen as a visible fog film. This is both an aesthetic issue (the fog film impairs driver visibility) and an indicator of high-boiling organic emissions from interior materials. ISO 6452 defines both photometric (reflectance-based) and gravimetric (mass deposition) methods for fogging assessment. ALS provides fogging testing to ISO 6452 as part of our interior emissions testing portfolio. Corrosion & Salt Spray Testing Corrosion is one of the most persistent and economically significant degradation mechanisms in automotive components and structures. Road salt, humid climates, and the electrochemical environment created by dissimilar metals in contact create conditions that attack metal surfaces, coatings, and plated surfaces continuously throughout a vehicle’s service life. Corrosion testing replicates these conditions in accelerated form, enabling assessment of coating quality, material selection, and corrosion protection effectiveness in a fraction of the real-world timescale. ISO 9227 – Neutral Salt Spray Testing (NSS) ISO 9227 is the primary international standard for salt spray (salt fog) corrosion testing, covering three test atmospheres: neutral salt spray (NSS), acetic acid salt spray (AASS), and copper-accelerated acetic acid salt spray (CASS). In the NSS test, the most widely applied, specimens are exposed to a continuously atomised 5% sodium chloride solution at 35°C for defined durations, typically ranging from 96 hours to 1,000 hours or more depending on the OEM specification. The standard defines the test apparatus requirements, solution chemistry, temperature tolerances, and evaluation criteria for assessing corrosion protection performance. ALS salt spray testing to ISO 9227 is applied to painted and coated metal components, fasteners and fixings, electroplated surfaces, and automotive exterior and underbody components. Results are documented through visual examination of corrosion creep from scribe lines, blister formation, and spot corrosion. The resulting data is then classified according to ISO 10289, allowing manufacturers to verify compliance with their specific OEM requirements. ASTM B117 – Standard Practice for Operating Salt Spray Apparatus ASTM B117 is the American equivalent of ISO 9227 for neutral salt spray testing, widely required by American OEMs and their supply chains. The test conditions under ASTM B117 are equivalent to ISO 9227 NSS, with 5% sodium chloride solution at 35°C, but the evaluation criteria and acceptance requirements may differ between specifications. ALS can conduct salt spray testing to ASTM B117 for clients whose OEM specifications reference this standard. Cyclic Corrosion Testing While continuous salt spray testing (ISO 9227, ASTM B117) provides a standardised accelerated corrosion environment, cyclic corrosion testing, which alternates between salt spray exposure, humidity, ambient drying, and optional UV exposure phases, which many OEMs consider more representative of real-world corrosion progression. ALS offers cyclic corrosion testing to selected OEM and industry standards, providing a more nuanced assessment of corrosion protection performance for clients whose OEM specifications require this approach. Thermal & Environmental Simulation Testing Automotive components experience extreme thermal and environmental conditions during manufacture, assembly, shipping, and service. Environmental simulation testing replicates these conditions in controlled laboratory settings, enabling assessment of component integrity, material stability, and functional performance across the full environmental envelope. Thermal Shock Testing (IEC 60068-2-14) Thermal shock testing exposes components to rapid transitions between high and low temperature extremes, replicating the shock experienced by components during engine start-stop cycles, cold weather startup, or transition between heated and cooled environments. IEC 60068-2-14 specifies the thermal shock test method, defining the temperature extremes, transition time, dwell time at each extreme, and number of cycles. Thermal shock testing is applied to automotive electronics, sensors, connectors, and any component where thermal cycling could cause fatigue cracking, delamination, or seal failure. Thermal Cycling & Temperature Endurance Testing (IEC 60068-2-1 / 2-2) Thermal cycling testing exposes components to repeated temperature cycles between defined minimum and maximum temperatures, with controlled ramp rates and dwell times. Unlike thermal shock, cycling involves slower temperature transitions that stress materials through differential thermal expansion rather than rapid temperature shock. IEC 60068-2-1 covers cold testing and IEC 60068-2-2 covers dry heat testing. These methods are applied to automotive materials, electronics, and polymer components to assess stability and endurance across the operational temperature range. Humidity & Damp Heat Testing (IEC 60068-2-78) Humidity testing exposes components to elevated temperature and relative humidity conditions, assessing resistance to moisture ingress, hydrolytic degradation, corrosion, and swelling. IEC 60068-2-78 specifies the damp heat steady-state test at 40°C and 93% RH, widely applied to automotive electronics and connector systems. ALS humidity testing supports qualification of automotive electronics for tropical and humid climate markets including Southeast Asia, where humidity resistance is a particularly critical performance requirement. Key Standards Reference – Materials & Environmental Testing Standard Test Type Key Parameters Typical Application VDA 278 VOC/FOG Thermal Desorption 90°C VOC / 120°C FOG, GC-MS analysis Interior trim, plastics, adhesives – German OEM ISO 12219 Interior Air VOC Chamber method, µg/m³ results Interior material VOC qualification VDA 275 Formaldehyde Emission Bottle method, photometric Interior materials – formaldehyde limits ISO 6452 Fogging Photometric / gravimetric, 100°C Interior trim – windscreen fog assessment ISO 9227 NSS Salt Spray – Neutral 5% NaCl, 35°C, 96h to 1000h+ Metal components, coatings, fasteners ISO 9227 AASS Salt Spray – Acetic Acid Acetic acid adjusted, 35°C Aluminium alloys, decorative plating ISO 9227 CASS Salt Spray – Copper Accelerated Copper chloride added, 50°C Decorative chrome plating assessment ASTM B117 Salt Spray – US Standard 5% NaCl, 35°C – ASTM method American OEM supply chain IEC 60068-2-14 Thermal Shock Rapid transfer, −40°C to +150°C Electronics, sensors, connectors IEC 60068-2-1 / 2-2 Thermal Cycling Defined ramp and dwell cycles Automotive materials, electronics IEC 60068-2-78 Damp Heat 40°C / 93% RH steady state Automotive electronics – tropical climates Industries & Applications Automotive Interior Trim & Materials Suppliers Suppliers of instrument panels, door trim, headliners, seat foams, floor carpets, and steering wheel covers require VOC emissions testing to VDA 278, ISO 12219, and VDA 275, as well as fogging testing to ISO 6452, to meet OEM interior air quality specifications. ALS provides the complete suite of interior emissions testing required for material qualification at German, Japanese, and American OEMs. Metal Component & Fastener Manufacturers Manufacturers of body-in-white components, underbody brackets, suspension parts, engine bay fasteners, and exterior fittings require salt spray testing to ISO 9227 and ASTM B117 to validate corrosion protection performance of coatings, platings, and surface treatments. ALS salt spray testing provides comprehensive performance data that suppliers use to verify compliance against OEM-specified corrosion resistance requirements. Automotive Electronics & Sensor Manufacturers ECUs, sensors, connectors, and power electronics components require thermal shock, thermal cycling, and humidity testing to IEC 60068 to demonstrate environmental robustness across the full automotive operating range. ALS environmental simulation testing supports qualification of automotive electronics for both temperate and tropical market applications. Frequently Asked Questions – Materials & Environmental Testing Q: What is VDA 278 and which OEMs require it? VDA 278 is the German automotive industry standard for measuring organic emissions from non-metallic interior materials using thermal desorption gas chromatography-mass spectrometry. It is required by German OEMs including BMW, Volkswagen Group (Volkswagen, Audi, SEAT, SKODA, Porsche), Mercedes-Benz, and their direct suppliers. The standard provides both VOC and FOG (semi-volatile) results, expressed in µg/g of material, enabling material qualification through comparison against OEM-specified emission limits for individual compounds and compound groups. Q: What is the difference between salt spray testing to ISO 9227 and ASTM B117? ISO 9227 and ASTM B117 specify equivalent test conditions for neutral salt spray testing, both using 5% sodium chloride solution at 35°C, but they originate from different standards organisations (ISO vs ASTM) and may have different specification requirements in terms of evaluation methods and acceptance criteria. ISO 9227 is the standard required by most European and Asian OEM specifications, while ASTM B117 is required by American OEM specifications. ALS can test to either standard based on your OEM specification requirement. Q: How long does a salt spray test take? The duration of a salt spray test is defined by the OEM specification or the standard being tested to, and can range from 96 hours (4 days) for some coating qualification tests to 240, 500, or 1,000 hours for more demanding corrosion resistance requirements. Long-duration tests require advance planning and scheduling. Please contact our team early in your project timeline to allow for test scheduling, and to confirm whether interim inspection requirements are specified. Q: Can ALS test for both VOC emissions and formaldehyde from the same material sample? Yes. It is common for OEM specifications to require both general VOC/FOG analysis (by VDA 278) and specific formaldehyde determination (by VDA 275) from the same material. ALS can conduct both tests from a single sample submission, minimising the material required and simplifying the sample preparation and submission process. Please specify both test requirements when making your enquiry. Request a Materials & Environmental Testing Quote From VOC emissions qualification for interior trim materials to salt spray certification for exterior components and thermal shock testing for automotive electronics, ALS Testing provides the accredited materials and environmental testing services that automotive suppliers in Malaysia and Southeast Asia require. Contact our specialists to discuss your testing requirements and receive a quotation. → Request a Quote:  https://www.alstesting.co.th/request-a-quote/  → Back to Automotive Testing Hub: /automotive-testing/ ISO/IEC 17025 Accredited  |  VOC + Salt Spray + Thermal Specialist  |  German & International OEM Standards

Root Cause Investigation · Fracture Analysis · Corrosion Analysis · Material Identification · Cross-Section ISO/IEC 17025 Accredited | SEM + FTIR + EDX + Cross-Section | Automotive Specialist When a component fails in production, in qualification testing, or in the field, the questions that matter most are not simply ‘what failed’ but ‘why did it fail’ and ‘how do we ensure it does not fail again.’ Failure analysis is the disciplined forensic process that answers these questions, tracing a visible failure mode back to its physical, chemical, or process root cause. In the automotive industry, failure analysis is a critical tool across the entire product lifecycle. During development, it identifies design or material weaknesses before they reach production. During qualification, it explains unexpected test failures and guides corrective action. During production, it investigates non-conformances and prevents recurrence. After field returns, it determines warranty liability, informs recall decisions, and drives product improvement. ALS Testing provides specialist automotive failure analysis services using scanning electron microscopy (SEM), FTIR spectroscopy, energy-dispersive X-ray spectroscopy (EDX), optical microscopy, and metallurgical cross-section preparation. With scanning electron microscopy analysis reaching 260 searches per month in the Malaysian market – the highest search volume in our entire keyword set – this is both the most technically demanding and the most commercially significant capability in our laboratory portfolio. What Is Failure Analysis? Failure analysis is the systematic investigation of a component or material to determine the cause of an unexpected failure, non-conformance, or performance deficiency. It applies a structured sequence of analytical techniques, starting with non-destructive visual and optical examination, progressing to surface and interface analysis, and culminating in destructive cross-section and microstructural examination where required, to identify the physical, chemical, or mechanical mechanism responsible for the failure. In automotive applications, failure analysis encompasses a wide range of failure modes and component types. Fracture analysis investigates cracked or broken metal, polymer, or composite components, determining whether the fracture originated from fatigue, overload, corrosion, embrittlement, or manufacturing defects. Corrosion analysis characterises the type and extent of corrosion damage and identifies contributing factors including material composition, coating quality, and environmental exposure. Delamination and adhesion failure analysis investigates separation at material interfaces including bonded joints, coatings, plated surfaces, and polymer-to-metal bonds. Contamination analysis identifies foreign particles or films on component surfaces or in lubrication systems that have caused or contributed to functional failure. Failure Analysis in the Automotive Supply Chain The automotive supply chain applies failure analysis at multiple points where the stakes of unresolved failures are highest. Tier-1 suppliers conduct failure analysis on components returned from OEM qualification testing, where a single test failure can delay programme launch. Warranty teams investigate field returns to distinguish design defects from manufacturing escapes, and to determine whether failures within the warranty period are attributable to the supplier, the assembly process, or the OEM’s application conditions. Purchasing and quality teams use failure analysis to assess whether returned components represent genuine supplier non-conformances or misuse and handling damage by the customer. In each case, the failure analysis report provides objective, evidence-based conclusions that carry weight in technical and commercial disputes. Why Choose an Accredited Independent Laboratory for Failure Analysis? Failure analysis conducted by an ISO/IEC 17025 accredited independent laboratory carries a level of credibility that in-house analysis cannot replicate. When failure analysis results are used in OEM disputes, insurance claims, product liability proceedings, or regulatory investigations, the independence and accreditation of the laboratory that produced the analysis is routinely scrutinised. ALS provides analysis that is conducted under a formal quality management system, with documented traceability of methods and equipment calibration, and with the objectivity of an organisation that has no stake in any particular outcome. Our Failure Analysis Techniques ALS failure analysis employs a suite of complementary analytical techniques, selected based on the nature of the failure, the material types involved, and the level of detail required to reach a defensible root cause conclusion. Our analysts are experienced in applying these techniques in combination; a fracture surface analysis, for example, may combine optical microscopy for initial characterisation, SEM for high-magnification morphological analysis, and EDX for elemental mapping of fracture features. Scanning Electron Microscopy (SEM) Analysis Scanning electron microscopy is the central analytical tool for failure analysis at the micro and nano scale. SEM images component surfaces, fracture faces, and cross-section features at magnifications from 20x to 100,000x, with a depth of field and resolution that far exceeds optical microscopy. SEM analysis reveals fracture morphology, the characteristic features that distinguish fatigue striations from intergranular fracture from ductile overload; identifies surface defects, pits, cracks, and corrosion morphology at the micrometre scale; characterises particle morphology in contamination investigations; and provides the imaging foundation for EDX elemental analysis. All SEM analysis at ALS is conducted in a controlled environment to minimise contamination, with samples prepared using appropriate techniques for the material type, including gold or carbon sputter coating for non-conducting samples. SEM images are documented with scale bars, magnification, and operating conditions for full traceability in the final report. Energy-Dispersive X-Ray Spectroscopy (EDX) Elemental Analysis EDX is used in combination with SEM to provide elemental composition data from specific points, areas, or features on a sample surface. By detecting the characteristic X-rays emitted from a sample under electron beam excitation, EDX identifies which elements are present and at what relative concentrations. In failure analysis, EDX is applied to identify corrosion products (for example, distinguishing chloride-induced pitting from sulfate-driven corrosion), to characterise contaminating particles (distinguishing iron from aluminium from silicon-based particles), to verify coating composition, and to detect elemental segregation or depletion at fracture interfaces. EDX mapping provides a spatial elemental distribution image across an area of interest, enabling visualisation of where specific elements are concentrated; for example, showing the distribution of zinc in a galvanic corrosion zone, or the localisation of chlorine at a corrosion initiation site. FTIR Spectroscopy (Fourier Transform Infrared) FTIR spectroscopy is the primary technique for identification of organic materials, polymers, coatings, and surface films in failure analysis. By measuring the infrared absorption spectrum of a material, FTIR produces a molecular fingerprint that can be matched against reference libraries to identify polymer types, adhesive formulations, lubricant residues, and contaminating films. FTIR is routinely applied in automotive failure analysis to identify: the composition of failed gaskets and seals; contaminating films on metal surfaces that inhibit adhesion or coating bonding; degraded or thermally oxidised polymer components; lubricant composition and degradation state; and foreign material contaminants found at failure sites. ALS operates both standard FTIR for bulk material analysis and ATR (attenuated total reflectance) FTIR for surface film analysis, enabling characterisation of films as thin as a few micrometres without the need for destructive extraction. Optical Microscopy & Stereo Microscopy Optical microscopy at magnifications from 10x to 1000x provides the initial visual characterisation stage of failure analysis, identifying fracture locations, corrosion zones, delamination interfaces, and gross defects before higher-resolution SEM analysis is applied. Stereo microscopy at lower magnifications (7x to 50x) provides three-dimensional surface imaging of fracture faces and component surfaces with excellent depth of field, enabling documentation of large-area failure features in context. All optical microscopy images are captured digitally and documented with magnification and scale information. Metallurgical Cross-Section Preparation & Analysis Cross-section preparation involves embedding a component in resin, cutting through the area of interest, grinding and polishing to a metallographic finish, and optionally etching to reveal microstructural features, providing access to the internal structure of a component at the site of failure. Cross-section analysis reveals coating thickness and uniformity, interface integrity between layers, crack propagation paths and morphology, grain structure and phase distribution in metals, porosity and inclusion content in castings, and the presence of decarburisation, carburisation, or other surface treatments. Combined with SEM and EDX analysis of the prepared cross-section, this technique provides the most comprehensive internal characterisation of a failed component.     Failure Modes We Investigate ALS failure analysis services address the full spectrum of failure modes encountered in automotive component manufacturing and service. Fracture & Fatigue Failure Analysis Fracture surfaces carry a detailed record of the failure mechanism, encoded in the morphological features of the fractured faces. Fatigue fractures display characteristic features including fatigue crack initiation sites, beach marks (progression marks showing crack growth over cycles), and fatigue striations at high magnification. Overload fractures show ductile features (dimples, shear lips) or brittle features (cleavage facets, intergranular separation) depending on material and loading conditions. ALS fractography, the systematic analysis of fracture surfaces, determines the failure mode, identifies the initiation site, and assesses whether the failure was consistent with design intent, an unexpected overload, or a material or manufacturing defect. Corrosion & Surface Degradation Analysis Corrosion failures in automotive components can take many forms: general uniform corrosion, pitting corrosion localised at surface defects or inclusions, galvanic corrosion at bimetallic interfaces, crevice corrosion in confined geometries, stress corrosion cracking in susceptible alloys under mechanical loading, and fretting corrosion at vibrating contacts. ALS corrosion analysis characterises the corrosion morphology by optical and SEM microscopy, identifies corrosion products by EDX elemental analysis and FTIR spectroscopy, and assesses the contribution of material composition, surface treatment quality, and environmental exposure to the observed damage. Delamination & Adhesion Failure Analysis Failures at material interfaces, including between coatings and substrates, bonded surfaces, plated layers and base materials, and moulded polymer overmoulds and metal inserts, are among the most common and commercially significant failures in automotive components. ALS investigates delamination failures by cross-section analysis to characterise the interface morphology, SEM and EDX analysis of both separated surfaces to determine the locus of failure (cohesive failure within a layer, or adhesive failure at the interface), and FTIR analysis to identify contaminating films or inadequate surface preparation that may have compromised adhesion. Contamination & Foreign Material Analysis Contaminating particles, films, or deposits on component surfaces can cause a range of functional failures from corrosion initiation to electrical resistance increase to mechanical interference. ALS contamination analysis applies the full suite of SEM, EDX, FTIR, and optical microscopy techniques to characterise contaminants and identify their source. This is frequently applied to investigation of corrosion-related warranty failures where a chloride, sulfate, or organic acid contaminant has initiated pitting or crevice corrosion, and to investigation of electrical contact failures where surface films have increased contact resistance. Our Failure Analysis Process ALS failure analysis follows a structured investigation process that ensures comprehensive characterisation and defensible conclusions in every case. Stage Activity Output 1. Receipt & Review Sample receipt, condition documentation, review of client background information Sample condition record, investigation brief 2. Non-Destructive Examination Visual, stereo, and optical microscopy – photographic documentation Overview images, failure site characterisation 3. Surface Analysis SEM imaging, EDX elemental analysis, FTIR surface film analysis High-resolution images, elemental data, material identification 4. Destructive Examination Cross-section preparation, metallographic analysis, SEM/EDX of cross-section Internal structure characterisation, interface analysis 5. Data Synthesis Integration of all analytical data, root cause determination, corrective action guidance Draft failure analysis report 6. Reporting Final report with images, data, conclusions, and recommendations Formal failure analysis report – ISO/IEC 17025 accredited   Frequently Asked Questions – Failure Analysis Q: What information should I provide when submitting a component for failure analysis? The quality of a failure analysis investigation is directly related to the quality of the background information provided. When submitting a sample, please provide a description of the component and its function, the failure mode observed such as fracture, corrosion, or delamination, and details on when and how the failure was discovered in production, qualification, or the field. It is also helpful to include the operational history of the component if known, any relevant manufacturing information like material specification, heat treatment, surface treatment, and assembly history, and the specific outcome you require from the investigation. This could include root cause identification, technical evidence for specification compliance, or corrective action recommendations. The more context you provide, the more focused and relevant our investigation can be. Q: How long does a failure analysis investigation take? Turnaround time depends on the complexity of the investigation, the number of techniques required, and the current workload of our analytical team. A straightforward fracture analysis using SEM and EDX can typically be completed within five to ten business days. More complex investigations involving cross-section preparation, FTIR analysis, and comparative testing of multiple samples may require two to four weeks. For urgent investigations, particularly production-critical failures, please contact our team directly to discuss expedited options. Q: Can failure analysis results be used in legal or commercial disputes? Yes. Failure analysis reports produced by ISO/IEC 17025 accredited laboratories are routinely used as technical evidence in commercial disputes, insurance claims, product liability proceedings, and regulatory investigations. The accreditation of ALS Testing means that our reports are produced under a formally audited quality management system, with documented traceability of methods, equipment, and analyst qualifications. If your investigation has a legal or commercial dimension, please advise our team at the outset so that we can ensure the investigation is conducted and documented to the appropriate standard. Q: What is SEM analysis and why is it important for failure analysis? Scanning electron microscopy (SEM) is a technique that uses a focused electron beam to image surfaces at very high magnification and resolution. Unlike optical microscopy, SEM can achieve magnifications of 100,000x or higher with a depth of field that makes it ideal for imaging rough fracture surfaces, corroded surfaces, and three-dimensional microstructural features. SEM is important for failure analysis because it reveals the micro-scale morphological evidence that distinguishes one failure mechanism from another: fatigue striations, cleavage facets, corrosion pits, and particle morphology are all characteristic features that guide the analyst’s conclusion about root cause. Q: Can ALS analyse plastic, rubber, and composite material failures as well as metals? Yes. ALS failure analysis services cover metals, polymers, rubbers, composites, adhesives, coatings, and electronics materials. FTIR spectroscopy is our primary tool for polymer and organic material characterisation, enabling identification of polymer type, degradation state, and contaminating species. SEM and EDX analysis are applied to polymer fracture surfaces, interface failures, and contaminant identification in non-metallic components. Our analysts have experience with the full range of materials used in automotive manufacturing. Request a Failure Analysis Investigation When a component failure requires expert investigation, ALS Testing provides the analytical depth, accredited methodology, and clear reporting that automotive manufacturers require. Contact our team today to discuss your failure analysis requirements and receive guidance on sample submission. → Request a Quote:  https://www.alstesting.co.th/request-a-quote/ → Back to Automotive Testing Hub: /automotive-testing/ ISO/IEC 17025 Accredited  |  SEM + FTIR + EDX + Cross-Section  |  Fast Turnaround Available

Particle Analysis · LPC Counting · Gravimetric Analysis · SEM Particle Identification ISO/IEC 17025 Accredited  | ISO 16232 & VDA 19 Specialist  | SEM Particle ID Available In precision automotive manufacturing, cleanliness is not a finishing step but a fundamental product specification. A single metallic particle of the wrong size in a hydraulic control valve, or a fibre contaminating a fuel injector channel, can translate into field failures, warranty claims, and production shutdowns that cost orders of magnitude more than the testing that would have prevented them. Technical cleanliness testing – also known as component cleanliness testing or particle contamination analysis, is the validated process of extracting, quantifying, and characterising particulate contamination from the surfaces and internal channels of automotive components. It is governed by two internationally recognised standards: ISO 16232 (Road Vehicles – Cleanliness of Components) and VDA 19 (Testing of Technical Cleanliness – Particulate Contamination of Functionally Relevant Automotive Parts), the German automotive industry standard that is widely required by European OEMs. ALS Testing is one of the very few independent laboratories in Malaysia and Southeast Asia offering ISO 16232 and VDA 19 cleanliness testing at specialist level. Our capability in this area represents a genuine competitive differentiator for our clients seeking OEM qualification, and for ALS as a laboratory in the regional market. What Is Technical Cleanliness Testing? Technical cleanliness testing is a structured analytical process that determines the type, size, and quantity of solid particulate contamination present in or on automotive components. It is applied to precision components where particle contamination poses a functional risk, primarily components with narrow channels, tight clearances, or surfaces that must maintain sealing integrity. The process involves three core stages: particle extraction, particle quantification, and particle characterisation. Extraction removes particles from the component using a validated method, typically pressure flushing, ultrasonic agitation, or direct surface rinsing with a filtered solvent. Quantification determines the mass and number distribution of extracted particles. Characterisation identifies the morphology and, where required, the material composition of individual particles using microscopy and analytical techniques. The output of a cleanliness test is a formal cleanliness class, expressed according to the ISO 16232 or VDA 19 classification system. This data allows manufacturers to verify compliance against their own internal specifications or OEM requirements. Why Technical Cleanliness Matters for Automotive Manufacturers The drive toward technical cleanliness in automotive manufacturing has been shaped by decades of field failure data linking particulate contamination to premature component failure. Hydraulic control systems in automatic transmissions, anti-lock braking systems, fuel injection systems, power steering units, and turbocharger oil supply circuits are all highly sensitive to particulate contamination. Even particles invisible to the naked eye (particles of 100 microns or less) can cause valve sticking, orifice blockage, accelerated wear, and seal damage. For electric vehicle powertrains, the stakes are equally high. Battery thermal management systems, power electronics cooling circuits, and electric motor lubrication and cooling pathways all operate with close tolerances where contamination can cause insulation breakdown, thermal hotspots, or mechanical wear. As EV penetration grows in Southeast Asia, the demand for cleanliness testing of EV-specific components is growing alongside it. OEM requirements for cleanliness compliance are increasingly contractual rather than advisory. Tier-1 suppliers to major European, Japanese, and American OEMs are routinely required to demonstrate cleanliness compliance using data from ISO/IEC 17025 accredited independent laboratories, not in-house testing. This is where ALS plays a critical role in the supply chain quality process. ISO 16232 vs VDA 19: What Is the Difference? ISO 16232 and VDA 19 are closely related standards, both governing the testing of technical cleanliness in automotive components. Understanding the relationship between them is important for specifying the correct test method. Dimension ISO 16232 VDA 19 Origin International (ISO Technical Committee 22) German Automotive Industry (VDA – Verband der Automobilindustrie) Structure 10-part standard covering extraction, analysis, and reporting Single comprehensive document – German and English versions Adoption Broadly adopted by global OEMs and regulatory frameworks Required by German OEMs (BMW, Mercedes-Benz, Volkswagen Group, Bosch) Particle Classes Uses ISO cleanliness classes based on particle count per size range Uses VDA cleanliness classes – more granular size range definition Relationship Harmonised – VDA 19 Part 1 and ISO 16232 are technically equivalent for most applications VDA 19 Part 2 adds requirements for assembly environments Reporting ISO 16232 format – required for ISO-referencing OEM submissions VDA 19 format – required for VDA-referencing OEM submissions   In practice, ALS tests to both standards, and our reports can be formatted to meet either ISO 16232 or VDA 19 reporting requirements depending on the OEM specification being addressed. When in doubt, our technical team will advise on the appropriate standard for your specific application. Our Cleanliness Testing Services ALS Testing offers a complete suite of technical cleanliness testing services, covering every stage of the analytical process from particle extraction through to SEM-based particle identification. All testing is conducted within our ISO/IEC 17025 accredited scope, with documented quality controls and traceability throughout. Particle Extraction – Pressure Flush, Ultrasonic & Rinsing Methods The foundation of any cleanliness test is the particle extraction method. ISO 16232 and VDA 19 define multiple validated extraction methods, each appropriate for different component geometries and contamination scenarios. ALS offers all primary extraction methods, selected in collaboration with the client based on the component design, functional surfaces of interest, and OEM specification requirements. Pressure flushing is used for components with internal channels such as hydraulic valves, fittings, and manifolds, where a filtered solvent is flushed through under pressure to carry out particles. Ultrasonic extraction is applied to components where particles adhere to external or complex internal surfaces, using ultrasonic energy to dislodge them into a filtration medium. Rinsing extraction is a simpler method for relatively large components where surface contamination is the primary concern. All extraction solvents used are filtered to a level that ensures blank contamination remains below the defined threshold before component testing begins. Gravimetric Analysis – Total Particle Mass Gravimetric analysis determines the total mass of particles extracted from a component, expressed in milligrams. This provides a global contamination index that is compared against the mass-based cleanliness specification. The extracted particles are collected on a pre-weighed filter membrane, dried, and weighed on a calibrated analytical balance with traceability to national mass standards. Gravimetric analysis is a fundamental requirement of both ISO 16232 and VDA 19, and provides a clear quantitative index. This result is used by quality control teams to determine if a component meets the predefined mass-based limits for their specific production line. Light Obscuration Particle Counting (LPC) – Size Distribution Analysis Light obscuration particle counting (LPC), also known as automatic optical particle counting, provides a count of extracted particles distributed across defined size ranges, expressed as a particle size distribution. A laser-based instrument counts particles suspended in a clean solvent, recording both the total count and the count in each size class (typically 100–150 µm, 150–200 µm, 200–400 µm, 400–600 µm, 600–1000 µm, and >1000 µm). This data is used to assign an ISO 16232 or VDA 19 cleanliness class and to compare against the OEM-specified cleanliness requirement for the component. LPC is the standard particle quantification method for ISO 16232 and VDA 19 cleanliness testing, and is required for any cleanliness class determination. It provides far more information than gravimetric analysis alone, enabling detection of large individual particles that may pose functional risk even when total particle mass is low. Microscopic Particle Analysis & Classification Following LPC, particles collected on the filter membrane are examined under a calibrated microscope (typically at 50x or 100x magnification) to classify individual particles by type, morphology, and size. ISO 16232 and VDA 19 define particle classification categories: metallic shiny (reflective metallic particles), metallic non-shiny (oxide-coated or corroded metals), fibres, and other non-metallic particles. This classification is important because different particle types carry different risk profiles; a metallic shiny particle of 400 µm in a hydraulic valve is far more concerning than a fibre of the same size. Microscopic analysis is reported with representative photomicrographs of significant particles, providing visual evidence of the contamination types found. This information supports root cause investigation when cleanliness failures are identified. SEM-EDX Particle Identification For cases where the identity of individual particles must be confirmed, particularly in failure investigation, contamination source tracing, or where OEM specifications require elemental identification of particles exceeding a defined size. ALS offers scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) analysis of individual particles collected from the filter membrane. SEM imaging provides high-magnification morphological characterisation of individual particles, while EDX provides elemental composition data that enables positive identification of particle material, for example distinguishing iron from aluminium from stainless steel, or identifying ceramic, glass, or polymer particle types. This combined SEM-EDX analysis is the most powerful particle identification tool available and provides definitive evidence for contamination source investigation. Component Types We Test ALS cleanliness testing services cover the full range of precision automotive components for which cleanliness specifications are typically defined by OEMs or international standards. Our experience spans hydraulic systems, powertrain components, fuel systems, braking systems, and EV-specific assemblies. Hydraulic & Fluid Power Components Hydraulic valves, valve bodies, manifolds, pump housings, cylinders, fittings, and tubing, all of which operate with fluid clearances where particulate contamination can cause sticking, jamming, or accelerated wear of precision-ground surfaces. ALS is experienced in testing components for automatic transmission hydraulic circuits, power steering systems, and industrial hydraulic assemblies to ISO 16232 and VDA 19 specifications. Fuel System Components Fuel injectors, fuel rails, fuel pumps, and direct injection components require extremely high cleanliness standards, as contamination can cause injector nozzle blockage, irregular spray patterns, and combustion chamber damage. Cleanliness requirements for high-pressure direct injection fuel systems are among the most stringent in automotive manufacturing, often requiring cleanliness classes that exclude particles above 100–200 µm. Braking System Components ABS modulators, brake calipers, master cylinders, and hydraulic brake lines must meet cleanliness specifications that protect the fine orifices and seal surfaces critical to braking system integrity. ALS tests braking components to OEM cleanliness specifications and ISO 16232, with particular attention to metallic particle counts that indicate machining residue or wear debris. EV & Powertrain Components Electric motor housings, battery thermal management circuit components, power electronics cooling plate assemblies, and EV gearbox components all require cleanliness verification as EV production scales up across the region. ALS is developing and applying cleanliness testing protocols for EV-specific components, drawing on our ISO 16232 expertise and engaging with emerging OEM specifications for EV powertrain cleanliness. Standards & Test Methods Our cleanliness testing is conducted to the following primary standards and test methods, all within our ISO/IEC 17025:2017 accredited scope. For tests outside our accredited scope, we apply validated in-house methods following the principles and protocols established by ISO 16232 and VDA 19. Standard / Method Description Application ISO 16232 Road Vehicles – Cleanliness of Components (10 parts) International cleanliness standard for all automotive components VDA 19 Part 1 Testing of Technical Cleanliness – Particle Contamination Analysis German OEM requirement – BMW, VW Group, Mercedes-Benz, Bosch VDA 19 Part 2 Assembly Environment Requirements for Technical Cleanliness Clean area requirements for assembly processes Gravimetric Analysis Total extracted particle mass by calibrated weighing Quantitative mass measurement for comparison against customer-defined limits. Light Obscuration Particle Counting (LPC) Automated particle count by size class using laser obscuration Particle size distribution – ISO/VDA cleanliness class assignment Microscopic Particle Classification Manual classification of particles by type and morphology Particle type distribution – metallic, fibre, non-metallic SEM-EDX Particle ID SEM imaging + elemental analysis of individual particles Particle source identification, failure investigation, OEM requirement   Why Choose ALS for Cleanliness Testing? Technical cleanliness testing is a specialised capability that requires more than a particle counter and a filter membrane. It requires experienced analysts who understand automotive manufacturing processes, validated extraction methods appropriate to the component type, calibrated equipment with documented traceability, and a quality management system that ensures the reliability of every result. One of Very Few Specialists in Malaysia & SEA ALS is one of very few independent laboratories in Malaysia and Southeast Asia offering ISO 16232 and VDA 19 cleanliness testing at this level of depth. While general testing laboratories may offer particle counting services, the full cleanliness testing process, including validated extraction, gravimetric analysis, LPC, microscopic classification, and SEM-EDX particle identification, which requires specific expertise and investment that ALS has made and maintains. Full Process Capability from Extraction to SEM-EDX Unlike laboratories that offer only partial cleanliness testing capability, ALS provides the complete analytical workflow from sample reception and extraction method selection through to final report with SEM-EDX particle identification where required. This full-process capability means that you can manage your entire cleanliness testing requirement through a single laboratory relationship, with consistent methods and results across all your components and platforms. ISO/IEC 17025 Accredited Results Our ISO/IEC 17025:2017 accreditation covers cleanliness testing within our accredited scope, meaning that our results carry the formal weight of internationally recognised laboratory accreditation. For OEM submissions and qualification programmes that require accredited test data, ALS test reports satisfy this requirement without question. Frequently Asked Questions – Cleanliness Testing Q: What is technical cleanliness testing and why do automotive OEMs require it? Technical cleanliness testing is the validated process of extracting, quantifying, and characterising particulate contamination from automotive components. OEMs require it because particulate contamination in precision components, particularly hydraulic systems, fuel systems, and braking systems, is a leading cause of field failures and warranty claims. ISO 16232 and VDA 19 provide the standardised framework for cleanliness specification and verification, and OEMs contractually require Tier-1 suppliers to demonstrate compliance using data from accredited independent laboratories. Q: What is the difference between ISO 16232 and VDA 19? ISO 16232 is the international standard for automotive component cleanliness testing, developed by ISO Technical Committee 22. VDA 19 is the German automotive industry standard, developed by the VDA (German Association of the Automotive Industry), and is specifically required by German OEMs such as BMW, Volkswagen Group, and Mercedes-Benz, and their major suppliers. The two standards are harmonised: VDA 19 Part 1 is technically aligned with ISO 16232, but the reporting formats and classification systems differ. ALS can test to either standard and can format reports to meet your specific OEM submission requirement. Q: What types of particles are identified in a cleanliness test? ISO 16232 and VDA 19 define four primary particle types: metallic shiny particles (highly reflective metals such as machined steel or aluminium), metallic non-shiny particles (oxide-coated or corroded metals, cast particles), fibres (organic or synthetic fibres from wipes, clothing, or seals), and other non-metallic particles (rubber, ceramic, glass, polymer). SEM-EDX analysis can further identify the elemental composition of individual particles for definitive material identification. Q: How do I prepare my components for cleanliness testing submission? Component preparation and packaging are important to avoid contamination between manufacturing and laboratory testing. In general, components should be sealed in clean polythene bags immediately after manufacture and kept sealed until sample submission. Do not use paper or cardboard packaging in contact with the component surface. Please contact our team before submission and we will provide specific sample packaging and shipping instructions for your component type. Q: Can ALS test to OEM-specific cleanliness specifications? Yes. ALS has experience with a range of OEM-specific cleanliness specifications in addition to the ISO 16232 and VDA 19 standards. Please provide the OEM specification document number and revision when making your enquiry, and our technical team will confirm our capability and advise on the test programme required. Request a Cleanliness Testing Quote Whether you are seeking ISO 16232 certification for a new component programme, investigating a cleanliness-related field failure, or establishing a cleanliness testing protocol for a new product line, ALS Testing has the expertise and accreditation to support you. Contact our team today to discuss your requirements and receive a quotation. → Request a Quote:  https://www.alstesting.co.th/request-a-quote/ → Back to Automotive Testing Hub: /automotive-testing/ ISO/IEC 17025 Accredited  |  ISO 16232 & VDA 19 Specialist  |  SEM-EDX Particle ID Available

Dust analysis in factories: testing methods and ISO standards that factories need to know. The growth of the EV and semiconductor industries has made particle control in manufacturing lines a key global issue, with the particle analysis services market valued at over $1 billion and expected to grow at an average rate of over 8% per year. Particle analysis is the process of examining the size, quantity, and composition of particulate matter contaminating air, surfaces, or product components. This is done to assess risk and ensure quality control meets industry standards. Many manufacturing industries require strict air cleanliness control according to ISO 14644 standards. This article will help you understand how dust analysis works, the types of instruments used, and why particle control has become a core part of quality control in modern factories. Why is the Particle Analysis Market Growing So Rapidly? Controlling particle contamination is a critical issue in advanced industries, particularly semiconductor and electronics manufacturing, which require cleanrooms with strict particle control. According to global industry organizations, the particle analysis services market is worth over a billion dollars and is growing at an average rate of 8–9% per year. This growth is primarily driven by three factors: Quality and hygiene regulations in industry. The growth of the EV and semiconductor industries. Continuously evolving analytical technologies such as AI and real-time monitoring systems. As production lines become more complex, dust analysis has become an integral part of quality control systems, not just general environmental monitoring.         The Dust Situation in Thailand: From PM2.5 to Production Processes Thailand faces a recurring PM2.5 dust problem. Data from the Pollution Control Department (PCD) indicates that many areas of the country have annual PM2.5 averages higher than the World Health Organization’s guideline of 5 micrograms per cubic meter, as per WHO Air Quality Guidelines. The PCD report also states that PM2.5 sources in Thailand come from various sectors, such as: Transportation Open burning Industrial sector Energy production While PM2.5 information is often discussed in a health context, in the manufacturing sector, process particles are also a significant risk. These particles can originate from metal scraps from machining, plastic powder from molding, or dust from machine wear, and can directly affect product quality. How many types of dust are there in a production line, and how do they differ? In industry, dust analysis is divided into two main groups based on particle origin: Airborne Particles and Component Cleanliness, which require different testing methods and reference standards. Airborne Particles Component Cleanliness Type Floating in the air in the production area. Stuck on a surface or in a part. Main factors From the movement of people, machinery, and manufacturing processes. From metal scraps, plastic powder, and wear and tear dust. Main industry Semiconductor, Medical Devices, Cleanroom Automotive, EV, and Automotive parts Standard ISO 14644 VDA 19 / ISO 16232 Testing LPC, Optical Microscope SEM/EDX, Optical Microscope, IC ALS ✓ ✓   As manufacturing processes become more complex, dust monitoring has become part of a quality control system, not just an environmental test. Laboratory Dust Analysis Methods Laboratory dust analysis uses a variety of instruments depending on the particle characteristics and the context of the manufacturing process, including: Optical Microscope SEM/EDX (Scanning Electron Microscope with Energy Dispersive X-ray) LPC Particle Counter (Liquid Particle Counter) GC-MS (Gas Chromatography–Mass Spectrometry) Ion Chromatography (IC)   Standards used in industrial dust analysis Industrial particulate matter analysis must adhere to internationally recognized standards so that test results can be used in quality control and inspection processes. Commonly encountered standards include: Automotive & EV Semiconductors and Electronics Medical Devices Aerospace Food & Pharmaceutical How long does dust analysis take? The timeframe depends on the testing method. For example, particulate matter measurement using ISO16232/VDA19 may take approximately 7-10 business days.   In an era of increasingly stringent manufacturing standards, the visibility and control of particles in production processes have become an integral part of a factory’s quality management system. Dust analysis is not just a technical test; it’s a crucial tool that helps manufacturers understand production process risks and consistently maintain international product standards.   For dust analysis or particle monitoring in your production process, ALS Testing Services (Thailand) Co., Ltd. offers services with an ISO/IEC 17025 certified laboratory.

ALS Testing Services (Thailand) Co., Ltd. organized the event “ALS Outing 2026 @ Ananta Riverhills Resort, Kanchanaburi” for relaxation. It is an activity that takes all employees out to find inspiration and reignite their passion for work, in order to enhance their own abilities. 1. Allow employees to showcase hidden skills and abilities that are not often expressed in the office, as well as increase communication among them. 2. Encourage employees to have shared work goals, motivate them to change the atmosphere, and create fun. 3. Employees get rest for good mental health. When employees rest, it benefits themselves, their work performance, and the team. 4. Increase good quality productivity within the organization. 5. Create a good environment for teamwork, with strength, enthusiasm, and cooperation in work.    

Corrosion and Corrosion testing For environmental testing for salt spray (Sodium chloride solution) for check the metallic or nonmetallic part tolerance to salt solution refer standard method of ASTM B 117, JIZ Z 2371 MIL-STD-202G-101  Salt mist cyclic test refer IEC 60068-2-52:2017 or client requirement