EU RoHS requires manufacturers to keep , run internal production control, draw up an EU declaration of conformity, and keep the file for 10 years after covered electrical and electronic equipment (EEE) is placed on the market.
This FAQ helps decide when and material data are enough to support the file, and when risk, gaps, changes, or authority scrutiny call for IEC 62321 testing.
and lab tests serve different roles in a RoHS file. Declarations can document what suppliers say about materials, components, and restricted substances; lab tests give analytical evidence for each selected or uniform material. RoHS does not make every part-by-part lab test the default. Build EN IEC 63000-style , use supplier and material declarations where they are traceable and current, and add IEC 62321 testing where the evidence record is thin, the material risk is high, the product changed, or market-surveillance exposure justifies stronger proof.
Evidence comparison
EU RoHS declarations vs lab tests
Compare and lab tests as RoHS evidence types: what each proves, where each is weak, and how they should be combined in EN IEC 63000-style .
Supplier and material declarations are supply-chain evidence. They are useful when specific, current, traceable, and mapped to the product, component, material, and restricted substances.
Second framework
Lab tests
Lab tests are analytical evidence for selected samples. They are strongest when sampling, preparation, and IEC 62321 methods match the material and substance question, including any need to follow an elemental screen with substance-specific analysis.
Declarations cover what the supplier or material-declaration data says for identified parts, materials, revisions, and substances. They can give broad BOM coverage when supplier data is complete and traceable.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Lab tests cover the sampled material or uniform material tested under a stated method. They give stronger analytical evidence for that sample but do not automatically cover every supplier, lot, color, coating, or future revision.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC source for XRF screening of lead, mercury, cadmium, total chromium, total bromine, and additional elemental indicators in uniform materials.
screening analysis of substances
Use declarations to build coverage across the BOM, then use testing to close specific uncertainty. Do not let either evidence type imply broader coverage than its scope supports.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
A supplier can provide declarations, but RoHS Article 7 keeps the manufacturer responsible for , internal production control, the EU declaration of conformity, CE marking, and 10-year recordkeeping.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
A lab can provide test results, but the manufacturer still decides whether the selected sample, method, and result are enough for the RoHS conformity file.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
IEC source for sampling, disassembly, disjointment, and mechanical sample preparation before analytical testing.
obtaining and preparing samples prior to the determination
Treat suppliers and labs as evidence providers. Keep the manufacturer or product compliance owner named as the decision owner for the final RoHS conclusion.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
Use declarations for stable, lower-risk materials where supplier identity, part revision, restricted-substance coverage, and date are clear enough to support the .
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Use tests when supplier evidence is missing, generic, stale, contradictory, or too narrow; when materials have higher substance risk; when exemptions are uncertain; or when a customer, importer, or market-surveillance authority needs stronger evidence.
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Make testing risk-based and documented. The trigger should explain why supplier evidence was enough, or why analytical evidence was needed for a particular material or substance.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Declarations help the manufacturer show how materials, components, or EEE were assessed against RoHS substance restrictions and any exemption assumptions.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Tests and measurements can demonstrate compliance with Article 4 requirements and, when performed or assessed under harmonised standards published in the Official Journal, support the RoHS presumption of conformity.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC source for XRF screening of lead, mercury, cadmium, total chromium, total bromine, and additional elemental indicators in uniform materials.
screening analysis of substances
Keep that supports the EU declaration of conformity and remains available after market placement. Each declaration or test report should support a stated material or substance conclusion.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Check whether the declaration names the supplier, part or material, revision, covered substances, concentration basis if stated, date, signatory or system source, and any exclusions or exemptions.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Check whether the lab report identifies the sample, preparation, method, measured substances, units, result, detection or reporting limits where provided, lab identity, and whether the tested material matches the product risk.
IEC source for phthalate determination in polymers, including DIBP, DBP, BBP, and DEHP.
Phthalates in polymers by gas chromatography-mass spectrometry
Reject generic evidence. A useful RoHS record ties each declaration or test to a BOM item, homogeneous-material question, restricted substance, and decision owner.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Declarations should be reviewed when product design, materials, supplier identity, manufacturing process, exemption status, or harmonised standards change.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Tests should be repeated or supplemented when the tested sample no longer represents the marketed product, a new material or supplier is introduced, or a prior screening result leaves an unresolved substance question.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC source for XRF screening of lead, mercury, cadmium, total chromium, total bromine, and additional elemental indicators in uniform materials.
screening analysis of substances
RoHS Article 7 requires series production to remain in conformity and requires changes in product design, characteristics, harmonised standards, or technical specifications to be taken into account.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
A clear declaration pack can answer many customer and importer evidence requests, but it must be specific enough to show what was assessed and who stands behind it.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Testing can be important when market-surveillance or customer scrutiny focuses on a material, coating, plastic, cable, spare part, or other area where supplier documents are not persuasive.
IEC source for sampling, disassembly, disjointment, and mechanical sample preparation before analytical testing.
obtaining and preparing samples prior to the determination
Keep both evidence types ready for review. Importers need access to the EU declaration of conformity and , and market-surveillance authorities may request documentation or corrective action under the EU product-compliance framework.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
Declarations can narrow the testing plan by identifying materials, substances, exemptions, and supplier claims that need confirmation or can be accepted on the documented material-risk and evidence assessment.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Tests can validate or challenge supplier evidence for selected materials, especially where screening or targeted IEC 62321 methods are appropriate for the substance question.
IEC source for phthalate determination in polymers, including DIBP, DBP, BBP, and DEHP.
Phthalates in polymers by gas chromatography-mass spectrometry
The record should explain why the selected mix of declarations and tests is proportionate to the product and material risk. Testing is useful only when its sample and method resolve the outstanding question.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Accept declarations when they are traceable, current, substance-specific enough for the product risk, and consistent with the BOM and exemption assumptions.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Add tests when the declaration trail is missing or weak, the material or supplier risk is high, a restricted substance question remains open, or the decision needs independent analytical evidence.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
What the evidence covers
Declarations
Declarations cover what the supplier or material-declaration data says for identified parts, materials, revisions, and substances. They can give broad BOM coverage when supplier data is complete and traceable.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Lab tests
Lab tests cover the sampled material or uniform material tested under a stated method. They give stronger analytical evidence for that sample but do not automatically cover every supplier, lot, color, coating, or future revision.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC source for XRF screening of lead, mercury, cadmium, total chromium, total bromine, and additional elemental indicators in uniform materials.
screening analysis of substances
Operational implication
Use declarations to build coverage across the BOM, then use testing to close specific uncertainty. Do not let either evidence type imply broader coverage than its scope supports.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Who remains responsible
Declarations
A supplier can provide declarations, but RoHS Article 7 keeps the manufacturer responsible for , internal production control, the EU declaration of conformity, CE marking, and 10-year recordkeeping.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Lab tests
A lab can provide test results, but the manufacturer still decides whether the selected sample, method, and result are enough for the RoHS conformity file.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
IEC source for sampling, disassembly, disjointment, and mechanical sample preparation before analytical testing.
obtaining and preparing samples prior to the determination
Operational implication
Treat suppliers and labs as evidence providers. Keep the manufacturer or product compliance owner named as the decision owner for the final RoHS conclusion.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
When to use it
Declarations
Use declarations for stable, lower-risk materials where supplier identity, part revision, restricted-substance coverage, and date are clear enough to support the .
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Lab tests
Use tests when supplier evidence is missing, generic, stale, contradictory, or too narrow; when materials have higher substance risk; when exemptions are uncertain; or when a customer, importer, or market-surveillance authority needs stronger evidence.
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Operational implication
Make testing risk-based and documented. The trigger should explain why supplier evidence was enough, or why analytical evidence was needed for a particular material or substance.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
How it supports RoHS duties
Declarations
Declarations help the manufacturer show how materials, components, or EEE were assessed against RoHS substance restrictions and any exemption assumptions.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Lab tests
Tests and measurements can demonstrate compliance with Article 4 requirements and, when performed or assessed under harmonised standards published in the Official Journal, support the RoHS presumption of conformity.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC source for XRF screening of lead, mercury, cadmium, total chromium, total bromine, and additional elemental indicators in uniform materials.
screening analysis of substances
Operational implication
Keep that supports the EU declaration of conformity and remains available after market placement. Each declaration or test report should support a stated material or substance conclusion.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Official source publishing EN IEC 63000:2018 as the harmonised RoHS technical-documentation standard and replacing EN 50581:2012.
technical documentation required for assessing materials, components and electrical and electronic equipment
Evidence quality checks
Declarations
Check whether the declaration names the supplier, part or material, revision, covered substances, concentration basis if stated, date, signatory or system source, and any exclusions or exemptions.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Lab tests
Check whether the lab report identifies the sample, preparation, method, measured substances, units, result, detection or reporting limits where provided, lab identity, and whether the tested material matches the product risk.
IEC source for phthalate determination in polymers, including DIBP, DBP, BBP, and DEHP.
Phthalates in polymers by gas chromatography-mass spectrometry
Operational implication
Reject generic evidence. A useful RoHS record ties each declaration or test to a BOM item, homogeneous-material question, restricted substance, and decision owner.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Review timing
Declarations
Declarations should be reviewed when product design, materials, supplier identity, manufacturing process, exemption status, or harmonised standards change.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Lab tests
Tests should be repeated or supplemented when the tested sample no longer represents the marketed product, a new material or supplier is introduced, or a prior screening result leaves an unresolved substance question.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC source for XRF screening of lead, mercury, cadmium, total chromium, total bromine, and additional elemental indicators in uniform materials.
screening analysis of substances
Operational implication
RoHS Article 7 requires series production to remain in conformity and requires changes in product design, characteristics, harmonised standards, or technical specifications to be taken into account.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Authority and customer scrutiny
Declarations
A clear declaration pack can answer many customer and importer evidence requests, but it must be specific enough to show what was assessed and who stands behind it.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Lab tests
Testing can be important when market-surveillance or customer scrutiny focuses on a material, coating, plastic, cable, spare part, or other area where supplier documents are not persuasive.
IEC source for sampling, disassembly, disjointment, and mechanical sample preparation before analytical testing.
obtaining and preparing samples prior to the determination
Operational implication
Keep both evidence types ready for review. Importers need access to the EU declaration of conformity and , and market-surveillance authorities may request documentation or corrective action under the EU product-compliance framework.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
How declarations and tests work together
Declarations
Declarations can narrow the testing plan by identifying materials, substances, exemptions, and supplier claims that need confirmation or can be accepted on the documented material-risk and evidence assessment.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Lab tests
Tests can validate or challenge supplier evidence for selected materials, especially where screening or targeted IEC 62321 methods are appropriate for the substance question.
IEC source for phthalate determination in polymers, including DIBP, DBP, BBP, and DEHP.
Phthalates in polymers by gas chromatography-mass spectrometry
Operational implication
The record should explain why the selected mix of declarations and tests is proportionate to the product and material risk. Testing is useful only when its sample and method resolve the outstanding question.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Practical decision rule
Declarations
Accept declarations when they are traceable, current, substance-specific enough for the product risk, and consistent with the BOM and exemption assumptions.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC product page describing the technical documentation manufacturers compile to declare compliance with applicable substance restrictions.
compiles in order to declare compliance
Lab tests
Add tests when the declaration trail is missing or weak, the material or supplier risk is high, a restricted substance question remains open, or the decision needs independent analytical evidence.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Practical decision rule
How should teams decide between declarations and lab tests?
Start with the exact EEE, BOM item, , supplier, revision, restricted substance, and exemption assumption being assessed.
Use supplier or material declarations when they are specific, current, traceable, and credible for the material risk.
Use IEC 62321 testing when the declaration trail is weak, the material risk is higher, the sample question is narrow enough to test, or customer, importer, or market-surveillance scrutiny needs stronger evidence.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Search this module
Find a question or answer quickly
4 of 4 questions
Question 1
When are supplier declarations enough for RoHS?
are useful when they identify the exact part, material, supplier, revision, restricted-substance scope, and date. They should support the manufacturer required by RoHS, not replace the manufacturer decision.
A declaration is strongest when it can be tied to a bill-of-materials (BOM) line, homogeneous-material assessment, IEC 62474-style material declaration, exemption claim if any, and the EU declaration of conformity. It is weak when it is only a broad marketing statement, an expired certificate, or a generic "RoHS compliant" label with no product identity.
Use declarations for known, stable supply chains where the supplier identifies the product or material and the restricted substances covered.
Keep the declaration with the technical file, because RoHS requires and the EU declaration of conformity to be kept for 10 years after EEE is placed on the market.
Refresh the evidence when design, material, supplier, manufacturing location, harmonised standard, or exemption status changes.
Are enough for EU RoHS compliance?
They can be enough for lower-risk materials when they are specific, current, traceable to the product, and suitable for the manufacturer . They are not enough when the declaration is generic, the supplier cannot identify the material or revision, the product changed, an exemption is unclear, or there is a credible risk that a restricted substance may exceed the homogeneous-material limit.
Does a RoHS declaration remove the need for manufacturer responsibility?
No. RoHS places the conformity assessment, , EU declaration of conformity, CE marking, and 10-year recordkeeping obligations on the manufacturer. Supplier evidence supports that file, but the manufacturer still owns the compliance conclusion.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
The manufacturer is responsible for the conformity assessment of the product
Question 2
When should lab testing be added?
Add testing when declarations do not give enough confidence for the risk. Common triggers include missing supplier data, unverified high-risk materials, a new or changed supplier, a design or material change, inconsistent documents, an exemption boundary, or a request from a customer, importer, or market-surveillance authority.
RoHS limits are assessed at homogeneous-material level. Lab work should start with sample selection and preparation, then use the IEC 62321 method that matches the substance and material. IEC 62321-3-1:2026 uses to screen for lead, mercury, cadmium, total chromium, total bromine, and other elemental indicators in uniform materials. Total chromium does not identify hexavalent chromium, and total bromine does not identify polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE), so a screening result can require a substance-specific follow-up method.
Use IEC 62321-2 for disassembly, disjointment, and sample preparation before analytical testing.
Use IEC 62321-3-1:2026 as an elemental screening method; do not report total chromium as hexavalent chromium or total bromine as PBB or PBDE without suitable follow-up analysis.
Use targeted IEC 62321 methods when the decision needs substance-specific evidence for lead, cadmium, chromium, PBB, PBDE, or phthalates.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
IEC source for phthalate determination in polymers, including DIBP, DBP, BBP, and DEHP.
Phthalates in polymers by gas chromatography-mass spectrometry
Question 3
What should the evidence decision record contain?
The record should let a reviewer reproduce the decision without interviewing the project team. It should state the EEE, BOM or material population, supplier evidence reviewed, RoHS restricted substances and homogeneous-material limits considered, exemption assumptions, test method if used, owner, date, and review trigger.
Use declarations for broad supply-chain coverage and add targeted tests where higher-risk materials, weak evidence, or unresolved questions justify them.
Map each declaration or lab report to the exact product, component, material, revision, and supplier.
State whether the evidence supports all ten Annex II restricted substances or only a narrower set.
Record review triggers for supplier change, product redesign, material substitution, exemption expiry or renewal, customer escalation, or authority request.
As an operational handoff, procurement obtains missing supplier records, engineering identifies the affected material and revision, and the manufacturer's compliance reviewer records whether the evidence is accepted, targeted testing is required, or the conclusion remains open. Name the missing fact and owner for an open conclusion before product release.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
EU market-surveillance framework relevant to requests for technical documentation and corrective action for non-compliant products.
market surveillance and compliance of products
Recommended next step
Review the declarations and tests behind the RoHS conclusion
This FAQ helps document which supplier declarations, material declarations, and IEC 62321 tests support each product decision, then keep the record with the technical documentation and EU declaration of conformity.
Common mistakes in RoHS declarations and test reports
The most common mistake is treating a certificate as a conclusion without checking what it actually covers. A supplier document may cover a part number, a material family, a manufacturing site, or only some substances. A lab report may cover one tested sample, not every future lot or supplier change.
Another mistake is testing the wrong layer. RoHS maximum concentration values apply by weight in homogeneous materials, so the sampling plan matters as much as the analytical method. Screening also has chemical-form limits: an elemental result is not automatically a result for hexavalent chromium, PBB, or PBDE.
Do not use a broad "RoHS compliant" statement if it cannot be tied to the product, component, material, revision, and restricted substances.
Do not cite lab results without recording the sample preparation, test method, units, reporting or detection limits where provided, and whether the method measured the regulated substance or only an elemental screening indicator.
Do not assume old declarations or tests still apply after product design, material, supplier, or harmonised-standard changes.
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
manufacturers draw up the required technical documentation
General EU product-law guidance for manufacturer responsibility, conformity assessment, CE marking, EU declarations, importers, and market surveillance.
"The manufacturer is responsible for the conformity assessment of the product"
Binding consolidated RoHS source for substance restrictions, homogeneous-material limits, manufacturer obligations, EU declaration of conformity, CE marking, and presumption of conformity.
"manufacturers draw up the required technical documentation"