Bright Dyes Blue Powder: FD & C Blue

The Blue NSF products are specially formulated versions of food grade dye FD & C Blue. The Blue NSF Food Grade products have been certified by NSF International to the ANSI/ NSF Standard 60 for use in drinking water. This dye is used for visual detection only and cannot be seen under ultraviolet light or detected by fluorometry. However, when used visually, its color is often thought to be more acceptable to public view than the fluorescing red or yellow green products. In this respect, it is sometimes used in fountains, ponds and streams for decorative effect. Visually, the dye appears as aqua to royal blue depending on its concentration and activity of the water.

Based on biochemical oxygen demand (BOD) studies, the dye is biodegradable with 77% of the available oxygen consumed in 7 days. As always the suitability of these products for any specific application should be evaluated by a qualified hydrologist or other industry professional.

Above Information from Technical Data Bulletin

Bright Dyes Blue Powder (ENVIROredi / Bright Dyes Label)

1 lb: 105005 -01 ,    10 lb: 105005 -10 ,    25 lb: 105005 -25
Dye Powder Downloads and Videos can be found here, Additional Dye Products can be found here, 

Bright Dyes Red Liquid: Rhodamine WT

The red NSF dye products are specially formulated versions of Rhodamine WT dye for
convenient use in water tracing and leak detection studies. This bright, fluorescent red dye is
certified by NSF International to ANSI/NSF Standard 60 for use in drinking water. It may be
detected visually, by ultraviolet light and by appropriate fluorometric equipment. Today it is most
often used visually. Visually the dye appears bright pink to red, depending on its concentration and
under ultraviolet light as bright orange.

The dye is resistant to absorption on most suspended mater in fresh and salt water. Compared to
 yellow/green dye products it is significantly more resistant to degradation by
sunlight and when used in fluorometry, stands out much more clearly against background
fluorescence.

Above Information from Technical Data Bulletin

Bright Dyes Red 25 pint 106023-01P (ENVIROredi / Bright Dyes Label), Dye Liquid Downloads and Videos can be found here, Additional Dye Products can be found here.

Bright Dyes Yellow/Green Tablet: Xanthene Dye

The yellow/green NSF dye products are 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. 

Based on biochemical oxygen demand (BOD) studies, the dye is biodegradable with 65% of the available oxygen consumed in 7 days. The dye is resistant to absorption on most suspended matter in fresh and salt water. 

Above Information from Technical Data Bulletin

Bright Dyes 101101 (ENVIROredi / Bright Dyes Label), Dye Tablet Downloads and Videos can be found here, Additional Dye Products can be found here.