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RoHS is a mandatory standard formulated by eu legislation. Its full name is "Restriction of Hazardous Substances in electronic and electrical equipment". This standard has been officially implemented since July 1, 2006. It is mainly used to standardize the material and process standards of electronic and electrical products, making it more conducive to human health and environmental protection. The aim of this standard is to eliminate lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl and polybrominated biphenyl ether from electrical and electronic products.
Include household incandescent lamps and light sources.
Excluding: medical equipment or monitoring equipment (WEEE directive type 8,9); Maintenance spare parts which are put on the market before July 1, 2006; Re-use products originally launched on the market before July 1, 2006.
· heavy metals:
- Mercury Mercury;
Chromium hexavalent (VI).
Polybrominated biphenyls (PCBS), Polybrominated biphenyls (PBB) 's;
The maximum limit is:
· lead, mercury, hexavalent chromium, polybrominated biphenyl, polybrominated biphenyl ether: 0.1% (1000ppm).
RoHS for all the production process and raw materials that may contain the above six kinds of harmful substances in electrical and electronics products, mainly including: white home appliance, such as refrigerators, washing machines, microwave ovens, air conditioners, vacuum cleaners, water heaters, etc., black appliances, such as audio and video products, DVD, CD, TV receiver, IT products, digital products, communication products, etc.; Electric tools, electric toys, medical electrical equipment.
2. Examples of the use of the substance by mercury (Hg) : thermostat, sensor, switch and relay, light bulb
4. Example of hexavalent chromium (Cr 6+) using this material: metal corrosion coating
6. Examples of polybrominated biphenyl ether (PBDE) using this substance: flame retardant, PCB, connector, plastic case
The test principles
· four harmful metal elements (Cd cadmium /Pb lead /Hg mercury /Cr6+ hexavalent chromium) need to be tested for metal materials.
· at the same time, heavy metal testing of packaging materials of different materials is also required (94/62/EEC).
Cadmium: less than 100ppm
Less than 350 parts per million in steel alloys
Less than 40000ppm is found in copper alloys
Hexavalent chromium: less than 1000ppm