A non-staining blue liquid colorant designed to be used with pesticide, fertilizer and/or plant growth regulator tank mixes. Provides visual assurance that these solutions are uniformly applied, with minimum overlap and no missed areas. Helps to alert the operator to improper equipment operation-the blue color immediately indicates lines and/or connection leaks and clogged nozzles. An excellent safety tool-the blue color provides real time feedback in the event of operator exposure to the solution. Non-hazardous. Not a dye and will not permanently stain skin.