Bright Dyes® FLT Yellow/Green Tablet
- Chemical Family
- Xanthenes
Bright Dyes® FLT Yellow/Green Tablet 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.
Properties
- Physical Form
- Tablets
Product families
Applications
- Other Military & Defense Applications
- Other Power Water & Utilities Applications
Product Families
- Specialty Dyes
- Other Processing Additives
Other characteristics
- Brand
- Bright Dyes
- Features
Good Light Fastness; FLT Yellow/Green vibrant color offers greater contrast in murky brown water; It's fluorescent properties offers greater apparent contrast than non-fluorescent blue; May be used for visual, ultraviolet* and fluorometric* inspections; Disappears in sunlight more rapidly than FWT Red dye and non-fluorescent blue; Ideal for visual inspections of smaller volumes of water, less than 20,000 gallons; Easy to handle; Unitized dosage – no measuring required; Quick dissolving (3-5 minutes); * Ultraviolet and Fluorometric detection requires the use of a dye with fluorescent properties.
- Functions
- Dye
- Applicable Processes
- Leak Detection, Visual Detection, Water Tracing
- Leak Detection
- Visual Detection
- Water Tracing
- Note
1 In deionized water in 100 ml flask. Actual detectability and coverage in the field will vary with specific water conditions. 2 No significant change in fluorescence between 6 and 11 pH. 3 (One tablet, 1 gram of powder), in flowing deionized water in a 10 gallon tank. 4 Measured on a Brookfield viscometer, Model LV, UL adapter, 60 rpm at 25°C.
- Color
- Green (Fluorescent)
- Yellow (Fluorescent)
- 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.
- Markets
- Industrial
- Dye Type
- Fluorescent Dyes
- Appearance
- Orange convex
- Pigment Type
- Fluorescent
- Technology
- Industrial Additives & Materials
- Pigments & Colorants
- Labeling Claims
- Biodegradable
- HIGHLIGHTS
It is 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 alwayss the suitability of these products for any specific application should be evaluated by a qualified hydrologist or other industry professional. Store product out of sunlight, in a cool and dry location.
- Storage Condition
Store product out of sunlight, in a cool and dry location.; Shelf life is 4 years from date of purchase.
- Certifications and Compliance
- NSF Approved
- Industrial Additives Features
- Good Light Fastness
- Industrial Additives Functions
- Dye
Technical data
Table 1 of 1
12 rows| Characteristic | Value | Unit |
|---|---|---|
| Detect Ability of Active Ingredient¹ | max. 100 | ppb |
| Detect Ability of Active Ingredient¹ | max. 100 | ppb |
| Maximum Absorbance Wavelength² | 490 - 520 | nm |
| Dissolution Time ³ | max. 3 | minutes |
| Dissolution Time ³ | max. 6 | minutes |
| Dissolution Time ³ | max. 3 | minutes |
| Dissolution Time ³ | max. 6 | minutes |
| Maximum Absorbance Wavelength (Smaller peak at 405 nm) | 490 - 520 | nm |
| Viscosity ⁴ | 1.8 | cps |
| NSF (Max use level in potable water) | 6.0 | ppb |
| NSF (Max use level in potable water) | 6 | ppb |
| Weight | 1.29 - 1.41 | g |
