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AGAS - Together we can


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

Packaging Information







  • Available from A‑Gas wholesale partners - find a supplier
  • Store cylinders in a cool, dry, well-ventilated area, out of direct sunlight
  • For alternative or larger package sizes please contact A‑Gas on 01275376600 or via the Contact Us form

Product Features and Benefits

  • Applications: 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
  • 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 5PPM oxygen and less than 2PPM moisture
  • A high pressure gas, use a certified nitrogen regulator/high-impact guard made to EN964 standards
  • Non-flammable and non-toxic compressed gas/cylinder outlet connection is 5/8” BSP female, 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 contact us directly