| CAS No.: | 7440-59-7 |
|---|---|
| Formula: | He |
| EINECS: | 231-168-5 |
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| Product Name | UHP Helium | HP helium | |
| Helium | ≥99.9999 | ≥99.999 | |
| Impurity(ppm) | Water(H2O) | ≤0.5 | ≤3 |
| Oxygen+Argon(O2+Ar) | ≤0.1 | ≤1 | |
| Nitrogen(N2) | ≤0.5 | ≤2 | |
| Carbon Monoxide(CO) | ≤0.1 | ≤0.5 | |
| Carbon dioxide(CO2) | ≤0.1 | ≤0.5 | |
| Hydrocarbon(THC) | ≤0.1 | ≤0.5 | |



