Controller RoHS Testing and Certification

ROHS Testing for Controllers 

Controllers must undergo RoHS testing to comply with export and sales requirements. 

RoHS Testing Principles: 

According to the EU WEEE & RoHS [1] directive, qualified domestic third-party testing institutions analyze products by separating materials and testing each material for hazardous substances. Typically, the tests cover the following substances: cadmium (Cd), lead (Pb), mercury (Hg), hexavalent chromium (Cr6+), polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs), and phthalates such as dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), di(2-ethylhexyl) phthalate (DEHP), and diisobutyl phthalate (DIBP). Results must comply with EU RoHS Directive 2011/65/EU, as amended by Directive (EU) 2015/863. 

- Metal materials: Tested for four hazardous metals (Cd, Pb, Hg, Cr6+). 

- Plastic materials: Tested for the four hazardous metals and brominated flame retardants (PBBs, PBDEs). 

- Packaging materials: Tested for heavy metals as per 94/62/EEC. 

Maximum Concentration Limits for the Six Hazardous Substances in RoHS: 

- Cadmium (Cd): Less than 100 ppm 

- Lead (Pb): Less than 1000 ppm 

- Mercury (Hg): Less than 1000 ppm 

- Hexavalent chromium (Cr6+): Less than 1000 ppm 

With advancing technology, ROHS certification is an essential indicator of the environmental performance of controllers. 

Steps and Processes for Controller RoHS Testing: 

1. Complete the RoHS Testing Application Form: Submit the required application form for initiating the test. 

2. Sample Preparation: Products are disassembled into homogeneous materials for testing. Prepare adequate sample quantities—approximately 20-40 grams for solid samples or 20-40 milligrams for liquid samples. 

3. Select a Testing Institution: Choose a qualified third-party laboratory, such as JJR Laboratory in China, to ensure accurate and authoritative results. 

4. Testing Execution: The selected institution conducts analysis as per RoHS directive requirements and appropriate testing methods. 

5. Result Evaluation: A report is issued detailing whether the content of hazardous substances complies with RoHS limits. 

6. Certification: Products meeting RoHS requirements receive a compliance report and certificate. Non-compliant products may require material substitution or design modifications. 

7. Continuous Monitoring and Improvement: Even after certification, maintain monitoring of the supply chain and production processes to ensure ongoing compliance. Update products as regulations evolve. 

These steps ensure that controller products meet RoHS directive requirements, helping to avoid market barriers and mitigate potential environmental risks.