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 5965-01-421-1244
NSN 4140-01-094-6836
NSN 6135-01-353-3802
NSN 5985-00-507-2572
NSN 6685-00-489-5746
NSN 5996-01-007-2147
NSN 6240-00-201-9011
NSN 5960-01-156-1396
NSN 5950-01-566-9305
NSN 2925-00-215-4954
NSN 7035-01-202-8699
NSN 5945-01-498-4452