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 6240-01-153-2861
NSN 5996-00-255-5567
NSN 5895-00-679-9479
NSN 5998-01-104-4262
NSN 5935-01-105-0738
NSN 5930-01-237-9081
NSN 5915-00-807-0203
NSN 6685-01-157-9199
NSN 6220-00-954-0442
NSN 5996-00-182-2002
NSN 6130-01-167-2990
NSN 6645-01-632-2272