What are the test principles of RoHS?
According to the requirements of the EU WEEE & ROHS directive, the qualified third-party testing agency in China is to separate the products according to the materials, and test the harmful substances with different materials. In general:
·Four harmful metal elements (CD, CD, Pb, Pb, Hg, Hg, Cr6 + hexavalent chromium) shall be tested for metal materials
·In addition to these four harmful heavy metal elements, brominated flame retardant (PBB / PBDE) should also be tested for plastic materials
·At the same time, it is also necessary to test the heavy metals of different packaging materials (94 / 62 / EEC)
The following are the upper limit concentrations specified for six hazardous substances in RoHS:
Cadmium: less than 100ppm
Lead: less than 1000ppm
Less than 3500ppm in steel alloy
Less than 4000ppm in aluminum alloy
Less than 40000 ppm in copper alloy
Mercury: less than 1000ppm
Hexavalent chromium: less than 1000ppm
gmtlight, provided by product testing department.