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 6150-00-731-9564
NSN 6650-00-221-7119
NSN 5930-01-107-2858
NSN 6685-01-216-0056
NSN 5920-00-480-5250
NSN 5855-01-179-8887
NSN 6610-01-492-1649
NSN 5925-00-238-3072
NSN 5930-01-124-6347
NSN 5895-01-530-0160
NSN 6320-01-072-2073
NSN 5945-01-487-3598