Filter Drier With Leak Detection Technology

Dry All – India & Spectroline- USA introduces worlds first Steel Drier with in-built Fluorescent Dye. This helps detect leak in a HVAC&R System quickly with help of an UV Torch only. The fluorescent dye is in-built into the filter drier at the time of manufacturing through a patented Tracer Wafer® (TW) from Spectroline. No more sniffer test, soap bubble test is required to detect leaks in an HVAC&R System.

Types Of Filter Drier With Leak Detection Technology

  • Liquid Line Filter Drier with TW (DMH-TW Series)
  • Liquid Line Filter Drier with Sight Glass with TW (DMHSG-TW Series)
  • Liquid Line Filter Drier with TW (DCH-TW Series)
  • Liquid Line Filter Drier with Sight Glass with TW (DCHSG-TW Series)

How it works?

  • Tracer Wafer charged with fluorescent dye is placed along with the desiccant.
  • When the system starts dye in Wafer is Released and mixes with lubricant and circulates with the oil & refrigerant.
  • In case of leak, Dye / Oil mixture escapes with the Refrigerant leaving a mark at point of leak.
  • Exact point of leak is easily visible with the help of Ultraviolet (UV) Flashlight through yellow glasses.
  • After repair wipe off the residual dye using a ‘Glow Away’ or similar cleaner.


  • OEM approved Filter Drier
  • Filter Drier pre-charged with Spectroline TRACER WAFER® impregnated with fluorescent dye.
  • Dye approved by all leading OEM, Compressor & Refrigerant manufacturers.
  • Compatible with all Refrigerants.
  • Proven technology: Over 250 million systems installed till date.

Advantage of Drier with Tracer Wafer for OEM Production Line:

  • Reduces warranty repair costs
  • Easy introduction to A/C System
  • Designed for special OEM needs
  • No handling of liquid dyes, avoiding false leak indications
  • No increase in labor and time
  • No production line changes necessary
  • Used for quality control on production line

Q. What is Fluorescent Leak Detection?

A. Spectronics Corporation invented fluorescent leak detection in 1955, this technology is used by HVAC professionals worldwide to locate fluid leaks in Air conditioning and refrigeration systems. This process is simple and effective requiring nothing more than fluorescent dye and a UV lamp.

Q. How does Fluorescent Leak Detection work?

A. First, add dye to the system either in Liquid form or as TW in Filter Drier and let it circulate. The dye/oil mixture escapes with the refrigerant and collects at all leak points. Scan the system with an ultraviolet lamp and see all leaks glow brilliantly!

Q. I am nervous about voiding my equipment’s warranty if I add dye. What should I consider when choosing a dye?

A. Spectroline dyes are the only highly concentrated dyes in the industry that are approved by manufacturers, co-solvent free, NSF certified and can remain safely in systems for its lifetime. Spectroline is the only manufacturer with OEM approval from companies such as Copeland, Bristol, Whirlpool, Carrier, Embraco and many more.

Q. Are Spectroline AR-GLO ® dyes compatible with all refrigerant and lubricants, including R-410a?

A. Yes. Spectroline AR-GLO® fluorescent dye is a universal dye that works with all refrigerant gases and lubricants.

Q. How much dye should be added to the system?

A. 4 ml of dye is enough to treat 2 L of lubricant, 6 kg of refrigerant or 5 tons of cooling capacity. A complete dosage chart and it ability to treat quantity of Oil is included with all our drier with TW.

Q. What types of leaks can be found using Spectroline products?

A. All leaks, including leaks as small as 3 ml per year and intermittent leaks that only appear when the system is under pressure can be easily detected.

Q. How long does it take to find a leak?

A. In a smaller system, you can find leaks in seconds. In larger systems, in supermarkets for example, it may take a few hours. Our recommendation is to use Dry All Filter Drier with Spectroline TW dye when a new installation is performed. In this way, the technician can do a weekly or monthly leak detection inspection in seconds.

Q. Will this dye work on systems with Oil Separator?

A. Yes it will. However efficient an oil separator may be , even a very small amount of oil is good enough to carry the dye along with it and circulate in the system.

Q. Will this dye effect the moisture indicator?

A. No the dye does not effect the Cobalt Chloride indicator paper in a liquid indicator / moisture indicator in any way.

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