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 5895-01-649-3713
NSN 2925-01-453-1606
NSN 5996-01-131-9353
NSN 6105-00-149-7956
NSN 5999-00-177-1791
NSN 5855-00-451-6155
NSN 5905-01-381-9125
NSN 5855-01-231-4945
NSN 5930-01-397-2172
NSN 4140-01-372-2047
NSN 5905-00-278-5764
NSN 6650-01-603-7866