0.4 per cent oxygen, balance nitrogen
A predetermined mixture of 2 or more gases in which each component is measured to extreme accuracy and its contents certified. It is normally used to standardize and assure the accuracy of highly sensitive laboratory equipment.
NSN 5945-01-450-5990
NSN 6610-01-100-3662
NSN 6240-01-651-0489
NSN 5950-01-401-5321
NSN 5905-00-529-6999
NSN 6110-00-232-5406
NSN 5930-00-824-0378
NSN 6645-00-400-3115
NSN 5950-00-153-4657
NSN 6610-01-435-3739
NSN 5965-00-256-8687
NSN 6650-01-485-2351