DFTB-C8 50 Pack of Fluorescent Yellow Green UV Dye DFTB-C8.

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  • 50 tab pack of DFTB-C8 Visible black light UV green tracer dyes.
  • Ultra violet dyes are specially formulated versions of Xanthene dye and is ertified by International to ANSI/Standard 60 for use in drinking water.
  • 50 tab pack of DFTB-C8 Visible black light UV green tracer dyes.
  • Ultra violet dyes are specially formulated versions of Xanthene dye and is ertified by International to ANSI/Standard 60 for use in drinking water.
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Fluorescent Yellow Green Water Tracer Dye Tablets.

* Use visually or with one of our black lights!
* 5/8" Tablets Per Bottle!
* 1 Tablet Will Make 60 Gallons of Tracer!
* Certified to the ANSI/NSF Standard 60 for Potable Water!
* Dissolved in 5-8 Minutes!
* Perfect for Cooling and Plumbing Systems
* Also Sold in Other Sizes!

DFTB-C8 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. DFTB-C8 Fluorescent Yellow Green EPA Approved & Certifed for Drinking Water Tracer Additive Concentrate.

Available In:
4, 50, 100, 200 and 2000 tablet containers. Larger units are available upon request.

  • Highly concentrated saving you money!
    Fluoresces under long wave black light!
    Safe and non-toxic!
    Can be used with our 6" Hand Held Black Light for mobility!
  • Can be used with UV sensors for automation!

Used In:

- Plumbing UV and Visible Tracing.
- Retention Time Fluorescent Studies.
- Trace Flow mapping and rate of flow studies.
- Condenser coil and tube leak detections.
- Power plant piping tracing.
- Septic system leak finding.
- Pollution Studies.
- Leak Detection in many fluid carrying systems.
- Lake river and pond analysis.
- Check for illegal or bad connections.
- Storm and sewer drain analysis.

Technical Information:

VAPOR DENSITY Not Applicable
VAPOR DENSITY Not Applicable
EVAPORATION RATE (Butyl Acetate = 1) Not Applicable
BOILING POINT Not Applicable
FREEZING POINT Not Applicable pH --@ Not Applicable

General Properties




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


Orange convex 1.6cm diameter

Reddish-brown aqueous solution

Orange fine powder

NSF, max use levels in potable water

6.0 ppb

10.0 ppb

1.0 ppb


1.35 gms ± 0.05



Dissolution Time 3

95% < 6 minutes


50% < 3 minutes 95% < 6 minutes

Specific Gravity


1.05 ± 0.05 @ 25°C


Viscosity 4


1.8 cps




8.5 ± 0.5 @ 25°C


Coverage of Products

One Tablet

One Pint Liquid

One Pound Powder

Light Visual (100 ppb)

605 gallons

125,000 gallons

1,200,000 gallons

Strong Visual (1 ppm)

60 gallons

12,500 gallons

120,000 gallons

How to Use:
How Fluorescent Dye Tracing Products Work: The "visual" aspect of our dye products refers to normal reflection of light as color. The "fluorescent" aspect refers to special properties of some chemicals to absorb certain wavelengths and then emit, rather than reflect, light in response. The emission can be seen by using a "black" ultraviolet light or precisely measured with a fluorometer. The reflected and emitted light have different wavelengths and are, therefore, not the same color.

Fluorescent Properties are of Greatest Value When:

- Tracing must be done when there is no sun or sufficient artificial light (in a sewer or a cave, for instance)

- Precise quantified data is required.

- Very small amounts of tracing material is allowed.

What Does PPB Mean? Most of our products contain fluorescent dyes, which can be detected visually, or with the use of ultraviolet light or fluorometer. As used in Risk Reactor literature, "ppb" refers to one part of active dye per billion parts of water. Using a fluorometer, the active dye can often be detected at levels less than one ppb. All data is presented as reference points only and should not be regarded as a recommendation. Users should make their own determination of appropriate dilution levels in any specific situation, which will vary with the nature, condition, and use of the water or liquid and the specific evaluation to be performed.

Dye Tables: May be dropped or flushed directly into drains, sewers or other points in the system. However, it may be desirable to dissolve them in a small amount of water to form a calculated concentration prior to use. Special larger shapes (cakes cones, and donuts) have been designed to provide optimum dissolution rates in large systems. Donuts are frequently suspended from a line or string into the body of water. Cakes and donuts are sealed in a handy water-soluble film for ease of use.

Light Stability: Red is recommended for yellow and green backgrounds such as algae rich water. Red, blue, and yellow green should be used in water bearing heavy sediment loads or when passing through soil with high clay content. Industrial red will absorb onto either. Photo degradation takes place in sunlight at different rates for different dyes. Red takes from approximately five to seven days and yellow green fades in two to three days. Blue, on the other hand, breaks down in three to four weeks. The color of all dyes will disappear if the solution is mixed with chlorine. Add approximately 4 grams of 12% bleach to every gram of product in solution.

Examples of Specific Projects: Test sewer lines for infiltration. Locates sewer lines. Check for illegal connections. Prove septic bypasses. Identify indirect cross-connections. Check drain pipes, downspouts, and gutters to assure drainage into proper channels. Use in inspection service for certification and reinspection documentation. Analyze travel times. Toilet leak detection kits are frequently used by plumbers, municipalities and utilities use them as part of public relations and water conservation programs. Detect leaks in closed systems and cooling systems of steel manufacturers. Study infiltration and industrial water piping systems. Trace acid coming though cooling systems. Check pump systems flow in fleet trucks, and for preventative maintenance programs. Detect sewer leaks into ponds, lagoons, and reservoir lines. Check circulation through sludge beds and to measure discharge flow from water tanks. Illustrate the hydraulic characteristics of streams and other water bodies. Identify and differentiate batches of slurry before the brick firing process. Measure the speed and longevity of material passing through a system (i.e. retention time studies).

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.

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