TECHNICAL DATA FLT YELLOW/GREEN WAX

Bright Dyes Yellow/Green 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 dye and has been used for labeling studies since 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. However, compared to Bright Dyes FWT Red products it is significantly less resistant to degradation by sunlight and when used in fluoremetry, stands out much less clearly against background fluorescence. As always the suitability of these products for any specific application should be evaluated by a qualified hydrologist or other industry professional.

General Use:

* Examine Water Movement, Current, Flow (In springs, streams, lakes etc.)
* Flow Mapping, Tracing and Time Studies
* Pollution Studies (Discharge &endash; Rate of Flow &endash; Mixing, Diffusion and Dispersion &endash; Circulation)

General Properties	Dye Cakes	Dye Cones	Dye Donuts
Detectability of active ingredient 1	Visual <100 ppb	Visual <100 ppb	Visual <100 ppb
Maximum absorbance wavelength 2	490/520 nm	490/520 nm	490/520 nm
Appearance & Size	Orange Cone 1 7/8" Base 7/8" Height	Orange Cone 3.0" Base 1 3/8" Height	Orange Donut 4" Diameter 4" Height / _" hole
Weight	1.25 oz + 5%	4.5 oz + 5%	32 oz + 5%
Wrapping	Heat sealed in cold water soluble film	Heat sealed in cold water soluble film	Heat sealed in cold water soluble film
Dissolution Time	About 45 minutes in sea water	About 1 _ hours in sea water	About 3-5 hours in sea water
Coverage of Products	Cakes	Cones	Donuts
Light Visual (100 ppb)	2,400 gallons	9,600 gallons	74,000 gallons
Strong Visual (1 ppm)	240 gallons	960 gallons	7,400 gallons

Caution: These products may cause irritation and/or staining if allowed to come in contact wit the skin. The use of gloves and goggles is recommended when handling this product, as with any other dye or chemical.

To our best knowledge the information and recommendations contained herein are accurate and reliable. However, this information and our recommendations are furnished without warranty, representation, inducement, or license of any kind, including, but not limited to the implied warranties and fitness for a particular use or purpose. Customers are encouraged to conduct their own tests and to read the material safety data sheet carefully before using.