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Leak Detection

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Leak Detection Dyes

Chromatint® leak detection dyes are available in water soluble and oil soluble types.

For over 25 years, Chromatech Incorporated has provided the leak detection industry with leak detection dyes for:
  • Automotive radiators
  • Leak detection dyes for automotive engines
  • Leak detection dyes for air conditioning formulated to meet the criteria of SAE J2297

Other features of our leak detection dyes include:

  • Fluorescent with UV, blue lights, and black lights.
  • Can be customized to packaging.

Oil-Soluble Leak Detection Dyes

Color Sample Title
D919025 Chromatint® Universal AC Fluorescent Yellow 3687 Liquid
Color Sample Subtitle
Chromatint® Universal AC Fluorescent Yellow 3687 Liquid
Main Description of Color Sample
Chromatint® Universal AC Fluorescent Yellow 3687 Liquid is an oil-based fluorescent yellow colorant designed for use in leak detection. This liquid dye is fluorescent with UV and blue lights. This product is designed to be used in leak detection applications, such as car refrigerant system leak detection.
Color Sample Features
• Easy to use in PAG and POE systems, minerals oils and naphthenic oils.
Color Sample Properties
• pH Stability: 2 to 13

• Water Soluble

• Physical Appearance: Dark amber liquid
Color Sample Packaging
• 475 lb. drums, 250 lb. drums, 40 lb. pails. Tote quantities available upon request.
Color Sample More Info
• R-1234yf (HFO-1234yf) & R-134a compatible

• Testing in your particular formulation is recommended.

Contact Us for a sample.

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Color Sample Title
D91197 Chromatint® Fluorescent Yellow 2197 Liquid
Color Sample Subtitle
Chromatint® Fluorescent Yellow 2197 Liquid
Main Description of Color Sample
Chromatint® Fluorescent Yellow 2197 Liquid is an oil-based fluorescent yellow dye designed for use in petroleum products and mineral oil-based fluids. It is ideal for PAG and POE systems. Designed for use with combination blue & black light. Color with UV light shown.
Color Sample Features
• Easy to use and easy to handle, eliminate dust problems associated with powdered dyes. Dispensing can be easily automated.
Color Sample Properties
• Use with motor oils, mineral oils, PAG and POE oils.

• Light Stability: Poor

• Physical Appearance: Dark yellow liquid
Color Sample Packaging
• 400 lb. drums.
Color Sample More Info
• Testing in your particular formulation is recommended.

Contact Us for a sample.

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Color Sample Title
D51006 Chromatint® Fluorescent Yellow Liquid
Color Sample Subtitle
Chromatint® Fluorescent Yellow Blend
Main Description of Color Sample
Chromatint® Fluorescent Yellow Blend Liquid is an oil-based fluorescent yellow colorant designed for use in leak detection. It can be used at 0.2 – 0.5% by volume in motor oil to detect leaks with an ultraviolet light.
Color Sample Features
• Easy to use and easy to handle, eliminate dust problems associated with powdered dyes. Dispensing can be easily automated.
Color Sample Properties
• Use with motor oils, mineral oils, and POE oils.

• Light Stability: Poor

• Physical Appearance: Dark orange liquid
Color Sample Packaging
• 400 lb. drums, 35 lb. pails.
Color Sample More Info
• Testing in your particular formulation is recommended.

Contact Us for a sample.

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Water-Soluble Leak Detection Dyes

Color Sample Title
D11008 Chromatint® Uranine Conc. Liquid
Color Sample Subtitle
Chromatint® Uranine Liquid Concentrate
Main Description of Color Sample
Chromatint® Uranine Liquid Concentrate is a fluorescent yellow colorant designed for use in industrial, hard surface, & multipurpose cleaners, metal working fluids, car wash detergents & waxes, antifreeze & coolants, water based adhesives, water tracing, and leak detection.
Color Sample Features
• Easy to use in many fragrances, preservatives, and surfactants.
Color Sample Properties
• pH Stability: 2 to 13

• Water Soluble

• Physical Appearance: Dark amber liquid
Color Sample Packaging
• 475 lb. drums, 250 lb. drums, 40 lb. pails. Tote quantities available upon request.
Color Sample More Info
• Testing in your particular formulation is recommended.

Contact Us for a sample.
Inquire about D11014 CHROMATINT URANINE LIQUID in Europe.

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Color Sample Title
C75800-357 Blue Liquid Color
Color Sample Subtitle
Blue Liquid Color
Main Description of Color Sample
Blue Liquid Color is a FDA-certified liquid dye which contains FD&C Blue #1. Blue Liquid Color is used in food, drug, and cosmetic applications and environments, including daylight leak detection in FDA regulated applications such as refrigeration.
Color Sample Features
• Kosher certified.

• Approved by the FDA and meets the specifications outlined in the Code of Federal Regulations, Title 21 Part 74.
Color Sample Properties
• pH Stability: 2 to 10

• Light Stability: Poor

• Water Soluble

• Physical Appearance: Dark blue liquid
Color Sample Packaging
• 34.96 lb. case of four gallons, 43.71 lb. pail.
Color Sample More Info
• Testing in your particular formulation is recommended.

Contact Us for a sample.
Not available in Europe.

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Color Sample Title
D999002 Chromatint® Fluorescent Brightener 3471 Liquid
Color Sample Subtitle
Chromatint® Fluorescent Brightener 3471 Liquid
Main Description of Color Sample
Chromatint® Fluorescent Brightener 3471 Liquid is a water soluble fluorescent tracer designed for use in water based adhesives, water tracing, leak detection, as well as household & industrial cleaners. This product requires the use of UV light (350 – 370nm) to fluoresce bright blue.
Color Sample Features
• Easy to use in many fragrances, preservatives, and surfactants.
Color Sample Properties
• pH Stability: 6 – 13

• Water Soluble

• Physical Appearance: Clear liquid
Color Sample Packaging
• 475 lb. drums, 450 lb. drums, 250 lb. drums, and 40 lb. pails.
Color Sample More Info
• Testing in your particular formulation is recommended.

Contact us for a sample.

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Need Technical Support?

Working on a new project? Having problems with your current colorant? We are here to help! Reach out for liquid dyes, pigment dispersions, and non-staining colorants.