Bright Dyes Water Tracing Dye, Yel/Grn, 200 Tablets

Bright Dyes Fluorescent FLT Yellow/Green Dye, Bottle of 200 Tablets                    

These fluorescent dyes provide a higher degree of environmental safety and can be used on potable water. One fluorescent yellow/green tablet in 60 gallons of water gives a strong visual concentration of 1 ppm, or one tablet in 600 gallons of water will give a light visual concentration of 100 ppb. Tablets dissolve in five to eight minutes. Bottle of 200 tablets.