Bright Dyes™ FLT Fluorescent Blue Biodegradable Dye, Tablets, Bottle of 200

Bottle of 200 Ecologically safe Bright Dyes Fluorescent Water Tracing Dyes for use in stream tracing, lake studies, flow mapping, storm and sewer analysis, pollution studies and leak detection. Fluorescent colors can be detected visually in most water conditions or with the use of ultra-violet light or a fluorometer. Fluorescent water dyes are temporary and will degrade naturally in sunlight, 5 to 7 days or with the addition of chlorine. FLT Blue and Standard Blue dyes are NSF certified to ANSI/NSF Standard 60 for potable water.