|Marquis Test:The Marquis Test is a reagent field test conducted by placing a drop of reagent liquid onto a small sample of the material being tested. The chemicals in the reagent react differently with different chemicals, turning a variety of colors based on the what is in the material being tested.||No Reaction|
|Mecke Test:As with the Marquis Test, The Mecke Test is a reagent field test conducted by placing a drop of liquid reagent onto a sample of the material in question. Mecke reagent is primarily used for the identification of heroin and other opiates.||Unknown|
|DEA Microgram Newsletter|
|Microgram: The Florida Department of Law Enforcement Orlando Regional Crime Laboratory (Orlando, Florida) recently received three different sets of tablets, suspected MDMA. The first exhibit was submitted by the Orange County Sheriff's Office, and consisted of 18 round pink tablets with a thin white coating on one side and a thin pink coating on the opposite side, total net mass 6.1 grams (see Photo 12). The white face had a dollar sign ($) logo, while the pink face was unmarked. Marquis color tests of each layer gave no reactions; however, the acidifed cobalt thiocyanate test gave a blue color for the pink layer and a very pale blue color for the white layer. Analysis by GC and GC/MS indicated not MDMA but rather a mixture of cocaine and pseudoephedrine.|
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