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https://www.wikihow.com/Test-Jewelry-for-Lead
Mar 31, 2018 · Look for a pink or red color to indicate the presence of lead. If your jewelry contains lead, the testing liquid will change color. You may see a pink or red color on your jewelry. The swab tip should also change from yellow to pink or red. The color turns darker as the test detects more lead.91%(37)
https://ttl-labs.com/jewelry-testing/
JEWELRY TESTING & FINDINGS. The safety of children's and adult jewelry, most notably with regards to lead and cadmium content, has come into question in recent years following several high-profile stories regarding tainted products imported from Asia.
https://dtsc.ca.gov/toxics-in-products/lead-in-jewelry/
Lead has often been used in jewelry, to make the article heavier, brighten colors, and to stabilize or soften plastic. However, lead can be dangerous, even deadly when used in jewelry. The state of California regulates lead in jewelry to help prevent it from harming people. Toxic Jewelry found in 2017
https://www.instructables.com/community/Request-How-can-I-test-jewelry-components-for-lea/
Lead (II) cations and the sulphide anions react to form the insoluble Lead sulphide which is a distinctive brown solid. If you only need to test qualitatively for the presence of lead on the surface of an object, a cotton swap dipped in distilled water wiped across the surface should turn brown when sodium sulphide solution is dropped onto it.
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