This presumptive test was developed to identify THC in marijuana. Judicial acceptance of the Duquenois-Levine Reagent was established through Frye hearings, and it is the most reliable field test available on the market.
To eliminate possible false positives, always shake the first ampoule for sixty (60) seconds before proceeding with the second and third ampoules.
Like all of our NARK II narcotics field tests, the Duquenois-Levine Reagent is intended for presumptive drug testing in the field.
10 tests per box.
NOTE: ALL TEST RESULTS MUST BE CONFIRMED BY AN APPROVED ANALYTICAL LABORATORY. The results of this test are merely presumptive. NARK® tests only for the possible presence of certain chemical compounds. Reactions may occur with, and such compounds may be found in, both legal and illegal products.
This test must be administered according to its specific instructions and may be used together with other reagents from the NARK® II Sequential Testing System.
Storage:
Avoid ultraviolet light, such as sunlight or fluorescent light.
Avoid extreme heat or cold.
Ideal storage: keep in the original packaging, in a cool, dry place.
Shelf life: best used within 3 years.
Safety Data Sheet, SDS:
Test hazards: strong acids, strong bases, oxidizers, strong solvents, and flammables.
