RoHS restricts the use of six substances in electrical and electronic equipment. Restricted substances have a maximum concentration value tolerated by weight in homogeneous materials: |
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- Hexavalent chromium (0.1 %)
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- Polybrominated biphenyls (PBB) (0.1 %)
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- Polybrominated diphenyl ethers (PBDE) (0.1 %)
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Additional substances may be restricted in the future. Priority substances for potential addition are hexabromocyclododecane (HBCDD), bis (2-ethylhexyl) phthalate (DEHP), butyl benzyl phthalate (BBP), dibutyl phthalate (DBP), and diisobutyl phthalate (DIBP).
The maximum permitted concentrations apply for each homogeneous material in the product, which means that the limits do not apply to the weight of the finished product, or even to a component, but to any material in the product that cannot be disjointed or separated into different materials by mechanical actions such as unscrewing or cutting.
Compliance is the responsibility of the party placing the EEE on the market in the EU. This includes manufacturers of EEE, with certain obligations on importers, distributors, and authorized representatives. However, since restrictions apply at the homogeneous material level, data on substance concentrations need to be transferred through the supply chain, and thus material and component suppliers often need to certify RoHS compliance to their customers.
The CE mark is the permitted indication of RoHS compliance. A product sold with the CE mark must meet RoHS requirements (as well as other requirements associated with the CE mark).