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 6240-00-952-1906
NSN 6150-01-521-0781
NSN 6320-01-411-1353
NSN 5905-01-651-5060
NSN 6650-01-412-1040
NSN 6645-01-479-5364
NSN 5990-01-440-7135
NSN 5905-00-516-2871
NSN 5950-01-381-2994
NSN 6645-00-961-5477
NSN 6650-01-408-5089
NSN 6645-00-397-2210