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Helium/He/High Purity Helium
Product Detailed
Related Categories:Other Chemicals
Helium/He
CAS:7440-59-7
Purity: 99.999%
Molecular Weight: 4.00
Loading: 200bar/50L Cylinder
Helium/HeCAS:7440-59-7Purity: 99.999%Molecular Weight: 4.00Loading: 200bar/50L Cylinder
HELIUM SPECIFICATION FROM ST GAS | |||
Standard | Purity | High Purity | |
Purity: | > 99.99% | > 99.999% | > 99.9995% |
Impurity: | |||
Ne | < 40 vol.ppm | <4 vol.ppm | <1 vol.ppm |
H2 | <7 vol.ppm | <1 vol.ppm | <0.1 vol.ppm |
O2 | <5 vol.ppm | <1 vol.ppm | <0.5 vol.ppm |
N2 | <25 vol.ppm | <2 vol.ppm | <1 vol.ppm |
CO | <1 vol.ppm | <0.5 vol.ppm | <0.1 vol.ppm |
CO2 | <1 vol.ppm | <0.5 vol.ppm | <0.2 vol.ppm |
CH4 | <1 vol.ppm | <0.5 vol.ppm | <0.1 vol.ppm |
H2O | <20 vol.ppm | <3 vol.ppm | <1 vol.ppm |
Helium/He/High Purity Helium
