Cannabispray is a two-part field test reagent for the detection and identification of marijuana, hashish and other cannabinoids. Cannabispray utilizes a modified Fast Blue BB (salt) reagent. Product modifications have been incorporated to stabilize this well-known reagent. Cannabispray reduces the number of false positives and is personally and environmentally friendly. Susing our collection paper # 0530, simply wipe the suspected surface or touch the seized substance. Spray first with Cannabispray-1 and then with Cannabispray-2. A redish brown color reaction on the collection paper indicates a positive reaction. The reagent has been packaged into an aerosol delivery system, which provides sensitivity to residue levels less than ten micrograms.