MR®913-G, Leak Detector concentrate, oil based (fluorescent – green)

MR®913 is a highly concentrated oil/solvent soluble dye containing a fluorescent dye in a high flash hydrotreated naphthenic solvent system used for leak detection in oil-based systems and has a wide application. The product is a yellow coloured liquid and has been found to be completely miscible in most petroleum or organic based products.

SKU Pack Size Case Size
2511-0087 Bulk 1L

Additional information


Appearance – dark yellow oily liquid
Chemical Composition – mixture of hydrocarbon and dye
Basis – hydrocarbon
Odour – characteristic

Reference Test Blocks

Reference test block type 1 (Ni-Cr panel – 30µm & 50µm)
Reference test block type 2 (5-star panel)
ASTM test block (Aluminium comparator block)


  • Works in any closed-loop circulatory systems where oil-based fluids are used.
  • Engineered to work with any host fluid without damaging the fluid’s properties or any of the system’s components.
  • Ideal for lubricant and hydraulic leaks.
  • Some applications include: facility maintenance and machinery, mobile hydraulic equipment, stationary hydraulic equipment, OEM on-line quality control.
  • Free of aromatics, oil-based
  • Superior reliability
  • Phthalate-free
  • No odour
  • Low toxicity
  • Suitable for all metals (suitability for plastics & ceramics requires testing prior to use)
  • Cost-effective

How it Works

Leak detector dyes are typically fluorescent compounds that are added to a system, such as an air conditioning or refrigeration system, to detect leaks and are commonly used in the HVAC and automotive industries. When a leak occurs, the dye is carried along with the refrigerant or other fluid, and will accumulate around the leak. To detect the leak, a technician will use a special UV light to illuminate the area where the dye has accumulated. The dye will fluoresce brightly under the UV light, making it easy to identify the location of the leak. The dye is typically added to the system in small quantities, and is safe for use with most refrigerants and other fluids. It can be added as a liquid or as a tablet that dissolves in the system. The dye is also non-reactive and non-corrosive, so it will not harm the system or any of its components.


Aerosol UN Model Regulation - UN 1950 AEROSOLS, 2.1 Bulk Non Hazardous