99.999%-99.9999% High Purity Helium Gas
We are suppling varieties of inorganic high-purity gases, such as nitrogen, argon, hydrogen, oxygen, carbon monoxide, etc.
Helium gas
Nature: colorless and odorless
Melting/Freezing Point: -272.1°C Boiling Point : -268.9°C
Critical Temperature: -267.9°C Critical Pressure: 0.23MPa
Helium was initially used in dirigible-balloons.
Nowdays, is widely used in Electronic industry, and chemical industry.
Name
| MF | Purity | Impurity content (ppm) |
| Helium | He | 99.999% | O2≤1, H2O≤2, H2≤1, HC≤3 |
| 99.9999% | H2O≤0.2, O2≤0.2, H2≤0.1, CO2≤0.1, CO≤0.1, CH4≤0.2, N2≤0.5 |
99.999%-99.9999% High Purity Helium Gas
