Mandelin Reagent Test Kit
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The Mandelin reagent, unlike Marquis, can determine the presence of Ketamine & PMA/PMMA but also an myriad of other substances making it an useful kit for most substances
Contains Ammonium Metavanadate in Sulfuric acid, which uniquely is yellow before reacting with an unknown substance
100+ tests per bottle
Consider upgrading to the Complete Test Kit to narrow down what your sample is.
It’s worth knowing.