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 5998-00-918-9073
NSN 5855-00-058-1293
NSN 6610-00-766-7923
NSN 5945-00-385-3683
NSN 5985-01-653-4032
NSN 5925-01-048-9216
NSN 6130-01-528-0113
NSN 5920-00-918-7550
NSN 2925-01-327-3069
NSN 6685-01-038-3716
NSN 6130-00-452-1486
NSN 6130-01-613-6199