Benefits of Spectroline Dye


Spectroline dyes are true solutions of organic fluorescent fluorophores within inert carrier fluids.

Industry Tested

Extensive testing,
proven safe for AC&R systems.


Safe for all types of units.
Ranging from small to large systems.

System Safe

Fully miscible, filtered down to 2 microns. Will NOT affect operating characteristics of any system.


With all popular refrigerants and lubricants,
including new A2Ls.

Specifically Formulated

Without particulate matter.
Cannot be filtered out or separated.

Fluorescent Dye Competitor Comparison


  • Brightest Fluorescent Response
  • Co-Solvent Free

Competitor A & B Dye Sample:

  • Dull Fluorescent Response
  • Contains Co-Solvents
Shown under 400 nm light with amber glasses

Benefits of Spectroline Dye


Spectroline dye is non-particulate and filtered down to 2 microns. This means it is fully miscible ensuring that the fluorescent dye doesn’t change the precise characteristics of the host fluid.

Environmentally Safe

Formulated with safe raw materials and helps reduce refrigeration emissions into the atmosphere.

Co-Solvent Free

Spectroline dye is filtered and free of co-solvents, particulates making it small and easy to pass through any AC&R system safely where it can remain circulating.


Trusted by industry leaders the Spectroline advantage includes quality, OEM grade dye that will not void equipment warranty and can remain safely circulating in the system.

Dye Concentration

Spectroline dyes are highly concentrated meaning they not only fluoresce brilliantly, but you use less dye per dose.

NSF Certified

Spectroline dyes are NSF Certified for category codes HTX2 and HX-2. NSF certification signifies that the product has undergone extensive product testing and material analyses.
EZ-Ject Complete Kit from Spectroline

Complete Leak Detection Kits

All-in-One AC&R Systems Tools

Fluorescent dyes for HVAC/R Leak Detection

AR-GLO® 5 Fluorescent Dye

OEM-Grade Dyes for AC&R Systems

Leak Detection Lamps from Spectroline

Leak Detection Lamps

AC&R System Inspection Lamps

Glo Seal Fluorescent Dye and Sealant from Spectroline

GLO SEAL™ Fluorescent Dye + Sealant

Premium Dye and Powerful Sealant

Fluorescent Leak Detection Tools

Working for you 24/7 – Once IN, always ON.


Safe, non-polymer
oil-soluble formula


Not activated by
moisture or oxygen


or hazardous


Compatible with ALL
refrigerants, including A2Ls


Soft, pliable seal will not cause
blockage & remains safely in
all AC&R systems


No additional fluids
or particles

Sealant Performance:

Most competitor sealant and dye products react with moisture or oxygen. This is a dangerous choice especially as moisture is a common contaminate in air conditioning systems.

These products will polymerize, form solids and once solids are formed, they cannot be flushed out. The entire system may need to be replaced.

GLO Seal™ is an oil-soluble formula that will not polymerize and cause blockage or damage to the system.

Polymerizing sealants remain liquid until exposed to moisture or oxygen turning them into solids, once formed, they cannot be flushed out. Resulting in system failure.

Hose blocked with polymerizing sealant.

Fluorescent Dye Performance:

GLO Seal™ fluorescent response is six times brighter than competitor products and is engineered with a more balanced fluorophore for increased stability and brighter dye performance.

The dye application and excitation in tested competitor products is minimal and indistinguishable.

Competitor Analysis:

GLO SEAL is classified as not hazardous according to OSHA 1910.1200.

Competitor products contain highly flammable materials that present health and safety hazards and shipping restrictions.

  • Carcinogen
  • Mutagenicity
  • Reproductive Toxicity
  • Respiratory Sensitizer
  • Target Organ Toxicity
  • Aspiration Toxicity

  • Irritant (skin and eye)
  • Skin Sensitizer
  • Acute Toxicity (harmful)
  • Narcotic Effects
  • Respiratory Tract Irritant
  • Hazardous to Ozone Layer (non-mandatory)

  • Flammables
  • Pyrophorics
  • Self-Heating
  • Emits Flammable Gas
  • Self-Reactives
  • Organic Peroxides

Our products work.

When you pick The Spectroline Advantage, you join industry leaders all over the world who have trusted us since 1955.

As the world’s leading manufacturer of ultraviolet equipment and fluorescent materials, we stay committed to creating the most innovative tools for your application which means that we are dedicated to quality. We know the importance of choosing a dependable product for maintaining your equipment. If you invest in properly and regularly maintaining them, you’ll end up saving time, money and maybe even lives.

Take advantage of our Spectroline Advantage, today!