0.4 per cent oxygen, balance nitrogen
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 6240-00-483-7038
NSN 6135-01-322-4655
NSN 5895-01-033-2611
NSN 5915-01-593-3365
NSN 5999-00-163-4129
NSN 5855-01-487-8872
NSN 5960-00-018-3477
NSN 6135-00-044-3860
NSN 6220-00-137-2485
NSN 5998-00-540-9571
NSN 6150-01-618-1653
NSN 5985-01-017-7342