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 6220-01-432-0816
NSN 6240-00-822-4571
NSN 6145-01-337-2133
NSN 2925-01-604-8984
NSN 5920-01-040-0425
NSN 2925-01-493-3245
NSN 6645-01-118-2058
NSN 6145-01-424-0354
NSN 5999-01-069-3877
NSN 6645-00-175-8156
NSN 6105-00-785-5273
NSN 6645-00-089-8842