We are supplying varieties of inorganic high-purity gases, such as helium, argon, hydrogen, oxygen, carbon monoxide, etc. Name MF Purity Impurity content (ppm) Nitrogen N2 99.999% O2≤3, H2≤1, CO≤1, CO2≤1, CH4≤1, H2O≤3 Comprssed Industrial Nitrogen Gas 99.999%