rohs compliance

RoHS Compliance Testing has become standard procedure for most manufacturers, sellers, distributors, and recyclers of electrical and electronic components or equipment sold or used in the European Union.

RoHS is the abbreviated form of Restriction of Hazardous Substances. Also, it is otherwise known as Directive 2002/95/EC. You may be wondering how the RoHS testing came into being. RoHS testing finds its origin in the European Union. The main purpose behind using RoHS is to prevent the use of hazardous materials in the manufacturing of electrical equipment. There are many dangerous materials and substances that go into the production of electronics and related equipment.

RoHS aims to reduce such substances so as to create a safer environment for those handling such products. Dangerous materials cause harm to those exposed to it during manufacturing, especially. It also aims to decrease the pollution caused by such materials in landfills, during recycling, etc. According to the decision, all relevant products available after July 1, in the EU market must go through the RoHS testing.

The restricted materials under the Restriction of Hazardous Substances Directive are:

Lead, Cadmium, Mercury, Hexavalent Chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates (DEHP, BBP, BBP, DIBP).

Materials are tested under the RoHS Compliance Test using portable RoHS analysers. Otherwise known as X-Ray Fluorescence or XRF metal analysers. They help in screening and verifying the restricted materials found in the concerned product. RoHS has been updated and improved over the years to increase its versatility. RoHS 2 and RoHS 3 are also available now. With the introduction of RoHS 3, a different set of testing must be done to determine levels of the harmful compounds. These get extracted with a solvent for further testing.

If you are wondering how RoHS 2 differs from the initial RoHS, it is simply that RoHS 2, also known as Directive 2011/65/EU came into being in July 2011. The scope of the previously established RoHS was amplified so that it covers all electrical/ electronic equipment, spare parts and cables with compliance stated under RoHS 2 depending upon the product category. RoHS 2 is currently used as CE-marking directive. RoHS compliance is put to use for the CE-marking of products. Each and every manufacturer of electrical/ electronic products has to follow the requirements put out by RoHS 2 so as to obtain CE marking for their products.

RoHS compliance testing is used by all companies that produce EEE appliances, sub-assemblies, cables, components, etc. RoHS also affects those companies which are sellers or distributors of such products. Even those who sell to distributors, integrators or resellers who make the product available in the European Union Market. The Restriction of Hazardous Substances Directive has a global reach now, it not only applies to electronic products circulating in the EU market but also to all the markets world-wide. RoHS also has application in the metal industry for any usage of metal plating, anodizing, chromating or on any other finishes on EEE machineries, heatsinks, or connectors.

RoHS Compliance Testing has become standard procedure for most manufacturers, sellers, distributors, and recyclers of electrical and electronic components or equipment sold or used in the European Union.

The need for RoHS testing is a result of the Restriction of Hazardous Substances Directive or RoHS Directive, which became effective on July 1, 2006, as mentioned above. The Directive was drawn up in the European Union to protect human health and the environment from hazardous substances, by restricting the use of six hazardous chemicals in electrical and electronic products.

The state-of-the-art Chemistry and Metallurgy Lab at Sigma Test & Research Centre equipped with ultra-modern technology and sophisticated instruments like LC-ICPMS, GC-MSMS, spectroscopy, etc. can determine the level of the following first four substances restricted by RoHS in a component.

State of art chemistry Lab and Metallurgy Lab at Sigma Test & Research Centre equipped with ultra-modern technology and sophisticated instruments like LC-ICPMS, GC-MSMS, spectroscopy, etc can determine the level of the following first four substances restricted by RoHS in component material:

Mercury (Hg): 100ppm

Hexavalent Chromium (Cr (VI)): 1000 ppm

Cadmium (Cd): 100ppm

Polybrominated Biphenyls (PBB): 1000 ppm

Lead (Pb) : 1000ppm

Polybrominated Diphenyl Ethers (PBDE): 1000 ppm

Bis(2- Ethylhexyl) phthalate (DEHP): 1000ppm

Benzyl butyl phthalate (BBP): 1000ppm

Dibutyl Phthalate (DBP): 1000ppm

Disobutyl phthalate (DIBP): 1000ppm

RoHS has set maximum concentration values for each of these restricted substances. All values are set at 0.1%, except for cadmium with a limit of 0.01%. STRC has the capability to test for lead, mercury, cadmium and hexavalent chromium.

RoHS compliance testing is performed in our lab using spectroscopy and wet chemistry methods to determine the concentrations of these RoHS substances in test samples. All RoHS testing results are fully documented in Certified Test Reports for our customer’ s record.

RoHS and the recast directive RoHS 2 that went into effect in July 2011 does exempt a number of materials and products from the requirements set forth in the Directive earlier and includes additional restrictions that went into effect on December 31, 2011.

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