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 4140-00-205-6491
NSN 5925-00-937-1586
NSN 6150-00-777-3149
NSN 5895-01-024-8455
NSN 5855-01-417-3250
NSN 5960-01-322-1945
NSN 5920-01-361-8835
NSN 6110-01-041-5986
NSN 5930-01-525-3307
NSN 5930-01-284-4257
NSN 6645-01-197-9090
NSN 6650-01-521-7872