Watch China ROHS testing and certification process
Date：2024-04-26 14:55:11 Classification
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Clocks and watches need to undergo China RoHS testing. China RoHS testing, which stands for "Restrictions on the Use of Certain Hazardous Substances in Electronic and Electrical Products," is a test in which China responds to and adapts to international restrictions on hazardous substances in electronic and electrical products. In particular, a series of national standards have been formulated in line with the EU RoHS directive.
Watch China ROHS testing items:
1. Lead (Pb): This is a common heavy metal used in certain alloys for making watches and their components.
2. Mercury (Hg): Mercury may be used as a manufacturing material for thermostats, sensors, switches and relays, light bulbs and other components in some watch products.
3. Cadmium (Cd): Cadmium may be used in components such as switches, springs, connectors, casings, PCBs, contacts and batteries of watches.
4. Hexavalent chromium (Cr6+): This substance is usually used as a corrosion coating on metal.
5. Polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs): Both are used as flame retardants and may appear in PCBs, connectors, plastic casings, etc. of watch products.
Watch China ROHS testing process:
1. Sample preparation: First, you need to prepare the samples for ROHS testing. These samples need to be selected according to certain standards, and the representativeness of the samples needs to be ensured.
2. Sampling: After the sample is selected, the sample is sampled. The sampling process needs to comply with certain regulations, such as preventing sample contamination during sampling.
3. Decomposition: After sampling is completed, the sample is decomposed for chemical analysis.
4. Detection: After the sample is decomposed, chemical analysis and instrumental analysis are performed on the sample. These analyzes can be done with a variety of laboratory instruments to detect whether samples contain lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr(VI)), polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) and other hazardous substances.
5. Result analysis: After the test is completed, analyze the test results. If the results meet the ROHS standards, it can be concluded that the ROHS test is qualified. During the analysis process, the influence of accidental factors needs to be eliminated to ensure the accuracy of the analysis results.
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