Cov khoom
Hluav taws xob helium
| Khoom | Cov Khoom Siv Txuj Ci |
| Helium purity siab | |
| Helium He purity (ntim feem) / 10-2≥ | 99.999 |
| Cov ntsiab lus ntawm neon (Ne) (feem ntim) / 10-6≤ | 4 |
| Hydrogen (H2) cov ntsiab lus (feem ntim) / 10-6 ≤ | 1 |
| Cov pa oxygen (O)2) cov ntsiab lus (feem ntim) / 10-6 ≤ | 1 |
| Cov ntsiab lus ntawm Argon (Ar) (feem ntim) / 10-6 ≤ | |
| Nitrogen (N)2) cov ntsiab lus (feem ntim) / 10-6 ≤ | 2 |
| Cov pa roj carbon monoxide (CO) cov ntsiab lus (feem ntim) / 10-6≤ | 0.5 |
| Cov pa roj carbon dioxide (CO2)2) cov ntsiab lus (feem ntim) / 10-6≤ | 0.5 |
| Methane (CH3)4) cov ntsiab lus (feem ntim) / 10-6≤ | 0.5 |
| Dej H2Cov ntsiab lus O (feem ntim) / 10-6≤ | 3 |
| Tag nrho cov ntsiab lus ntawm phau ntawv xov xwm/10-6≤ | 10 |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
