The Heroin Test presumptively identifies all Heroin (White, Brown, and Black Tar).
Until the development and introduction of the Presumptive Drug Testing Kits, the chemistry used for presumptive tests had not changed significantly since the late 1960s. The Kits were first introduced in the early 1990s, and they have become the presumptive drug testing kits of choice throughout Europe.
The hermetically-sealed, pre-scored glass test ampoules are filled with specially treated solid crystals which are impregnated with the highest quality reagents and then blanketed with a high purity nitrogen gas. Unlike other drug testing kits, these kits will maintain their bright colors indicating a positive test result for a longer period of time*, allowing you to present the test kit in court if probable cause questions should arise. With no hazardous chemicals to be concerned with, disposal of the kits after testing or use in court is done by simply tossing the used ampoule in a trash can.
* Color retention may vary depending on amount and purity of the drug.
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