|
Helium（He）
| Item |
Purity Specificaition % |
| Helium(He) |
99.995 |
99.999 |
99.9999 |
| Impurities(ppm) |
Oxygen(O2) |
≤2 |
≤1 |
≤0.5 |
| Moisture (H2O) |
≤10 |
≤1 |
≤0.2 |
| THC |
≤3 |
≤0.5 |
≤0.2 |
| Carbon Monoxide(CO) |
≤1 |
≤1 |
≤0.1 |
| Carbon Dioxide(CO2) |
≤1 |
≤1 |
≤0.1 |
| Argon(Ar) |
≤2 |
≤1 |
≤0.5 |
| Nitrogen(N2) |
≤10 |
≤5 |
≤0.5 |
| Hydrogen(H2) |
≤3 |
≤1 |
- |
| Neon(Ne) |
≤15 |
≤4 |
- |
Filled in GB or DOT cylinders
Valve: QF-90;CGA580 | 
