← Technology WikiRoHS (Restriction of Hazardous Substances)
RoHS restricts ten hazardous substances (lead, mercury, cadmium, hexavalent chromium, PBB, PBDE, and four phthalates) in electrical and electronic equipment sold in the EU.
How it works
- Applies to every homogeneous material in the product — solder, plastics, cables, coatings.
- Limits: 0.1% for most substances, 0.01% for cadmium (by weight in homogeneous material).
- Verified by lab testing (XRF screening + chemical analysis); test reports should reference IEC 62321.
- China RoHS has its own labeling rules — don't confuse the two.
Key specifications
| Substances | 10 restricted |
| Lead limit | 0.1% |
| Cadmium limit | 0.01% |
| Test method | IEC 62321 |
What buyers and QC should check
- For purifiers: focus on PCBs, power adapters, and wiring — the highest-risk parts.
- Ask for material-level test reports, not just a finished-product pass.
Free one-page QC checklist (PDF)
The buyer checks from this entry, condensed for the factory floor or the inspection. No signup needed.
Download free PDF checklistCommon questions
Does RoHS apply to non-electric filter housings?
EU RoHS covers electrical/electronic equipment. A purely mechanical housing may fall outside scope — but if it's part of an electric purifier system, the system-level assessment covers it.
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