Dye-Tracer-Liquid-YellowGreen-1-Pint

Dye Tracer Liquid, Yellow/Green, 1 Pint, Concentration 1 Pint to 12, 500 Gallons, Application 50 to 50, 000 Gallons, Standards Certified NSF60 Safe For Use in Drinking Water Biodegradable Dye TracersFluorescent color dyes make water-flow patterns easy to see, track, and map in lakes, reservoirs, septic systems, piping, and other bodies of water. Bright, vivid colors are easily detected in clear, deionized water in the range of 100 ppb of active ingredient or just 10 ppb under a hand-held laboratory black light (UV).