IFWB-C81OZ ounce of UV Yellow Green Fluorescent Water Tracer Dye

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  • One ounce of IFWB-C81OZ Black light water dye showing yellow under ultra violet and is EPA approved for drinking water
  • The 1 ounce of IFWB-C81OZ ultra violet dye is proudly made in America
  • Greenish yellow bright black light dye IFWB-C81OZ approved by the EPA and easy to use.
  • Wholesale fluorescent yellow green water dye IFWB-C81OZ NSF certified for drinking water and river tracing.
  • IFWB-C81OZ Black light reactive water dye to trace leaks and create strong UV inks.
MSRP: $39.45
— You save $10.47


Reorder part number IFWB-C81OZ. Ounce of yellowish green dye for water tracing applications.

The ounce IFWB-C81OZ is a fluorescent Yellow/Green Water Tracer Additive Concentrate EPA Approved and Certified for Drinking Water.

The IFWB-C81OZ is Available In:
Ounces, Pints, gallon and 5 Gallon containers. Larger units are available upon request. We also do special sizes and private labeling.

IFWB-C81OZ Product Description:

Risk Reactor's IFWB-C8 Yellow Green products are specially formulated versions of Xanthene dye, certified by ANSI 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. However, compared to Risk Reactor's IFWB-C7 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.

Certified To Meet EPA Standards This is a certification that these products conform to the ANSI Standard 60 for potable water as set forth by the EPA in The Clean Water Act.

Note: Our yellow green is recommended for shallow water bearing heavy sediment loads. Sandy soil will not absorb our Red or yellow green. Color is visible in clear water at one part per million.

Benefits of Risk Reactor's IFWB-C8 Yellow Green Water Based Tracer:

Most appropriate fluorescent products for quantitative analysis!
It is clear when diluted preventing stains and other unwanted marks!
Can be detected using one of our (portable battery operated ones available) black lights at significantly lower levels such as in the range of 10 ppb in ideal conditions!
Fluoresces under long wave black light!
Cleans up with water!
Highly concentrated saving you money!
Safe and non-toxic!
Can be used with our 6" Hand Held Black Light for mobility!
Can be used with UV sensors for automation!
Because of the fluorescent nature, IFWB-C8 offers greater contrast than non-fluorescent tracers!

Used In:

- Plumbing Tracing.
- Retention Time Studies.
- Flow mapping and rate of flow studies.
- Condenser coil and tube studies.
- Power plant piping tracing.
- Septic system analysis.
- Pollution Studies.
- Leak Detection in many fluid carrying systems.
- Lake river and pond analysis.
- Check for illegal connections.
- Storm and sewer drain analysis.
- Agricultural Agencies.
- Conservation districts.
- Fish and wildlife authorities.
- Fire departments.
- Ocean studies .
- Swimming pool services.
- Geologists.
- Environmental consultants.
- Farms and ranches.
- Food processing. 

Technical Information:

VAPOR DENSITY (mm Hg @ 25 + C) -23.75
EVAPORATION RATE (Butyl Acetate = 1) -1.8
BOILING POINT 100 degrees C (212 degrees F)
FREEZING POINT 0 degrees C (32 degrees F)
pH --@ 8.0 or above.
SOLUBILITY IN WATER: Highly soluble.
Packaging: Gallon, Pint and Ounce Containers. Note that tablets and powders are also available,powder being special order.

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

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 measure Yellow Green 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.

The maximum Absorbance/Emission Wavelengths of Our Products are:

Product Color: Yellow Green

Absorption Emission: 490 nm 520 nm  

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.

How to Calculate the Size of a Body of Water? One gallon of water occupies 1337 cubic feet. For a rectangular tank, multiply depth in feet times width times length divided by the factor 1337 to establish the number of gallons. For more complicated bodies of water, formulas can be found in scientific texts on water utility management, hydrology, etc.

For Stream Tracing and Pollution Detection: Introduce tracers into the water at the source or suspected source of pollution. Allow sufficient time as calculated, to permit the dye tracer to reach the effluent or recipient location. Take samples of water for analysis.

Dye Tablets: 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: Yellow Green is recommended for yellow and green backgrounds such as algae rich water. Yellow Green, blue, and yellow green should be used in water bearing heavy sediment loads or when passing through soil with high clay content. Industrial Yellow Green will absorb onto either. Photo degradation takes place in sunlight at different rates for different dyes. Yellow Green 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).

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Warranty Information

This unit is warranted to be free from material and workmanship defects for a period of thirty (30) days from the date of original purchase. Supplier's limit of liability under this warranty is to repair or replace the product at Supplier's option. Consequential costs such as, but not limited to, loss of use, loss of time or freight charges are not covered. Any product that has been abused, altered, tampered or incorrectly operated is not covered. Product finish is excluded from this warranty. No other warranties are expressed or implied. We reserve the right to make changes in design, materials and specifications without prior notice.
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