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.


*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

  • 10 ltr
  • 30 ltr
  • 40 ltr

Available from A-Gas wholesale partners. Use the ‘Find a supplier’ box to the right for further detailsStore 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 & 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 5PPM oxygen and less than 2PPM moisture
  • A high pressure gas, use a certified nitrogen regulator / High impact guard made to EN964 standard
  • 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

Environmental Impact

Gas canister icon

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

Back to Products

Find a UK Supplier

For Refrigerants and Service Gases.

Enter a city, town or postcode in the search box to find suppliers in the UK.

For distribution partners outside of the UK, please contact your local A-Gas team. 

Do you also need..?