Industrial Gases

Oxygen Free Nitrogen (OFN)


Oxygen Free Nitrogen (OFN) is used for leak detection, strength and pressure testing and in helping to reduce oxidation when brazing.


  • Commercial Refrigeration
    Commercial Refrigeration
  • Industrial Refrigeration
    Industrial Refrigeration
  • Commercial Air Conditioning
    Commercial Air Conditioning
  • Industrial Air Conditioning
    Industrial Air Conditioning
  • Domestic Air Conditioning
    Domestic Air Conditioning
  • Other
    Other *

Leak testing of RAC systems, Strength and pressure testing, Cleaning condenser coils, For use alongside Braze-A-Gas to reduce oxidation and scale build up when brazing thus preventing blockages in the system

Packaging information

  • D
  • E
  • G
  • Available from A-Gas wholesale partners. Use the ‘Find a supplier’ box to the right for further details
  • Store cylinders in a cool, dry, well ventilated area, out of direct sunlight
  • A-Gas operates a returnable cylinder fleet, empty cylinders are to be returned to an A-Gas wholesale partner
  • For alternative or larger package sizes please contact A-Gas on 1800 002 427 or via the Contact Us form

Product Features & Benefits

  • Cylinder fitted with a non-return valve to ensure that the nitrogen supply is free of contaminants
  • A-Gas OFN is 99.998% pure and has less than 10PPM oxygen and less than 2PPM moisture
  • A high pressure gas, use a certified nitrogen regulator
  • High impact guard made to EN1964 standard
  • Non-flammable and non-toxic compressed gas
  • Cylinder outlet connection is 5
  • 8” BSP Male Type 50, a standard fitting size for nitrogen regulators
  • It won’t contaminate a refrigeration system and prevents scale build up

The information contained within this website is for guidance only, for further system specific advice please call A-Gas directly.

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