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 6135-01-397-6564
NSN 5925-00-081-9135
NSN 5855-01-335-7532
NSN 5915-00-409-9546
NSN 5925-00-152-7705
NSN 5895-01-322-6485
NSN 6320-00-089-9426
NSN 5915-01-435-1679
NSN 5855-00-189-6066
NSN 6145-01-198-5916
NSN 6685-00-108-6374
NSN 6135-01-167-7604