NARK® is a compact, convenient field test kit offering presumptive identification of the most frequently abused drugs and narcotics. Reagents are packaged in disposable tubettes a unique, easy-to-handle system. Each individual reagent is sealed in a thin glass ampule ensuring freshness and eliminating cross contamination with other reagents. The glass ampoules are secured on each end of the plastic tubette. All tests come in a box of 10 tubes, except GHB reagent, which comes with 5 test tubes per box.