EGI O2 - 1997 Especiál Gas Standards for Oxygen ATTENTION!!!

Maxima for Gaseous Oxygen Specialty Applications

Gaseous Oxygen

Limiting Characteristics Extra Dry Zero Ultra High Research
Oxygen Min. % (mole) 99.6 99.98 99.99 99.999
Water ppm <10 ppm <10 ppm <2 ppm < 1 ppm
Nitrogen <20 ppm <5 ppm
Argon <20 ppm <5 ppm
Carbon Dioxide <0.5 ppm <0.5 ppm
Carbon Monoxide <0.5 ppm <0.5ppm
Total Hydrocarbons <0.5 ppm <0.5 ppm <0.2 ppm
Hydrogen <1 ppm <1 ppm
Total Impurities <0.4% <200 ppm <100 ppm <10 ppm

Note that this is only a chart and does not reflect the standards for filtration, analytical tolerance and other data. This is for quick reference only and you should review the entire document for other specifications relating to process and production.