| Name | Molecular formulas | Purity(%) | Impurities（ppm） |
| Nitrogen | N2 | 99.999% | O2≤3, H2≤1, CO≤1, CO2≤1, CH4≤1, H2O≤3 |
| 99.9999% | H2O≤0.2, O2≤0.2, H2≤0.1, CO2≤0.1, CO≤0.1, CH4≤0.2 | ||
| Hydrogen | H2 | 99.999% | O2≤1, N2≤5, CO≤1, CO2≤1, CH4≤1, H2O≤3 |
| 99.9999% | H2O≤1, O2≤0.2, N2≤0.4, CO2≤0.1, CO≤0.1, CH4≤0.2 | ||
| Oxygen | O2 | 99.999% | H2≤0.5, Ar≤2, N2≤5, CO2≤0.5, total hydrocarbon≤0.5, H2O≤2 |
| 99.9999% | H2≤0.1, Ar≤0.2, N2≤0.1, CO2≤0.1, total hydrocarbon≤0.1, H2O≤0.5 | ||
| Argon | Ar | 99.999% | H2≤0.5, O2≤1.5, N2≤4, CH4+CO+CO2≤1, H2O≤3 |
| 99.9999% | H2O≤0.2, O2≤0.2, H2≤0.1, CO2≤0.1, CO≤0.1, CH4≤0.2, N2≤0.5 | ||
| Helium | He | 99.999% | O2≤1, H2O≤2, H2≤1, total hydrocarbon≤3 |
| 99.9999% | H2O≤0.2, O2≤0.2, H2≤0.1, CO2≤0.1, CO≤0.1, CH4≤0.2, N2≤0.5 | ||
| Carbon dioxide | CO2 | 99.999% | O2≤1, H2O≤2, N2≤5, CO≤1, total hydrocarbon≤1 |
| Carbon monoxide | CO | 99.5% | H2≤3180，N2≤1350, O2≤60, H2O≤50 |
| 99.95% | N2≤350, O2≤50, H2O≤5 | ||
| Sulfur dioxide | SO2 | 99.9% | O2+N2≤100, H2O≤10, other≤200 |
| Hydrogen sulfide | H2S | 99.9% | SO2<100，CO2<300，H2O<5 |
| Nitrogen monoxide | NO | 99.5% | N2O≤4000, NO2≤2000, N2≤300, CO≤500 |
| Nitrogen dioxide | NO2 | 99.9% | N2≤20, O2≤5, H2O≤50 |
| Nitrous oxide（Laughing gas ） | N2O | 99.99% | CO2 <0.5, CO<0.1, total hydrocarbon<0.1, N2<90, O2<5, H2<2，Ar<0.5, H2O<1.0 |
Package: 2-40 （L） in cylinder.
Other inorganic high-purity gases are available, such as nitric oxide, nitrogen dioxide, nitrous oxide, oxysulfide.
Address: No.58 Shenglong Road, Jiufu Industry Park, Jiuting Town, Songjiang District, Shanghai 201615, China
TEL: +86-021-37820693
FAX: +86-021-37820690
ZIP：201615
E-mail:info@gas-sh.com
WETRY WECHAT
