| 摘要 |
A method of making drug abuse test papers wherein bibulous paper carriers are impregnated with specific test chemicals, (bismuth subnitrate, potassium iodide, acetic acid, and platinum salt), in two coatings and dried after each coating under specific temperature conditions. The test chemicals are provided for the detection of the drug abuse compounds of amphetamine, cocaine, marijuana, and narcotics contained in low concentrations in animal or human urine. Additionally described is a means of preserving urine samples using esters of parahydroxybenzoic acid.
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