Research Grade 6.0
Minimum Purity 99.9999%

Total Impurities < 1 ppm
Total Hydrocarbons < 0.2 ppm

Chromatography  Grade 5.5
Minimum Purity 99.9995%

Nitrogen (N2) < 3 ppm
Moisture (H2O) < 1 ppm
Oxygen (O2) < 1 ppm
Total Hydrocarbons < 0.5 ppm

Up to 292 cf

Up to 2,640 PSI

Ultra High Purity Grade 5.0
Minimum Purity 99.999%

Moisture (H2O) < 1 ppm
Oxygen (O2) < 1 ppm
Total Hydrocarbons < 0.5 ppm
CO2 and CO < 1 ppm