最終更新日：2025/11/29
The technician carefully prepared the Liebermann reagent, a mixture of potassium nitrite and concentrated sulfuric acid used to test for cocaine, morphine, PMA and PMMA, before beginning the analysis.
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The technician carefully prepared the Liebermann reagent, a mixture of potassium nitrite and concentrated sulfuric acid used to test for cocaine, morphine, PMA and PMMA, before beginning the analysis.
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