The Restriction of the use of certain hazardous substances(RoHS), adopted in the year 2002 is the EU directive that restricts the use of certain hazardous substances in electrical and electronic products( EEE).
This directive includes the list of restricted substances for exports to EU which includes lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), bis(2-ethylhexyl) phthalate (DEHP), butyl benzyl phthalate (BBP), dibutyl phthalate (DBP), and diisobutyl (DIBP).
According to ROHS-2 revised guidelines issued in 2011, all the EEC products should not contain more than 0.1% weight of homogenous material of any listed substance. There are some products that might fall outside the scope of RoHS, the European Commission may have issued a limited exemption allowing a restricted substance to be used for a certain purpose.
The regulators wanted to protect the health of consumers and subsequently promote the re-use and ecological recycling of wastes and mandated this directive to ban entry of electronic goods with some hazardous substances. Which is why the testing of the components and modules used in the electronics products and hardware equipment for RoHS are the initial step towards the compliance and are mandatory for the manufacturing and assembly units.
Countries exporting electronics and IT hardware products to the EU will have their products rejected if they do not conform with RoHS compliance standards hence these must pay close attention to the guidelines issued in the latest directives.