Crystal Meth drugs test - Dope or Nope

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Crystal Meth Test by Dope or Nope: a reagent test based on colour This kit is built to check a sample for methamphetamine, the substance known in its crystalline form as crystal meth. You get a glass ampoule with reagent and a colour chart showing the possible reactions. Running the test takes a couple of minutes and calls for no equipment at all. Reagent tests rely on discolouration. The reagent reacts with the substance in your sample, and both the colour and the speed of that change say...