33 cubic feet, 20.9%o2/n2
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 5925-01-442-3792
NSN 2925-01-443-1748
NSN 5945-00-899-9726
NSN 5998-01-230-3346
NSN 5935-01-303-4959
NSN 7035-00-631-3782
NSN 6650-01-258-0811
NSN 6645-00-754-4108
NSN 5915-01-414-9242
NSN 4140-01-411-3710
NSN 6150-00-642-5435
NSN 5998-00-661-0380