- Functions:Dye
- Chemical Family:Waxes
- Applicable Processes:Visual Detection, Leak Detection, Water Tracing
- Features:Good Light Fastness
Bright Dyes® FLT Yellow/Green Wax (Cake) is specially formulated versions of Xanthene dye, certified by NSF International to ANSI/NSF Standard 60 for use in drinking water. This dye is the traditional fluorescent water tracing and leak detection material and has been used for labeling studies from the beginning of the century. It may be detected visually, by UV light and by appropriate fluoremetric equipment. Today it is most often used visually. This dye has been used by the military to mark downed pilots for search and rescue operations over large water bodies. Visually the dye appears yellow/green, depending on its concentration and under UV light as lime green. It is best for visual inspections of moderate volumes of water, 20,000-50,000 gallons.