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Test swab device and method of detecting lead, mercury, arsenic, and bismuth
Test swab device and method of detecting lead, mercury, arsenic, and bismuth
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机译:测试棉签装置和检测铅,汞,砷和铋的方法
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摘要
A swab is impregnated with a test reagent such that a test for a specific substance can be effected by rubbing the impregnated swab over the surface to be tested and then viewing the swab for a reagent reaction. A method for testing for a substance includes impregnating a swab with a reagent, and rubbing the swab over a surface suspected of containing the substance. If the substance is present in the surface, a reaction with the substance produces an easily detectable color on the swab tip.
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