High-Purity Helium refers to helium gas that has been refined to achieve extremely low levels of impurities. It is classified by its purity level, often expressed as a percentage or in terms of “nines” (e.g., 99.999% = 5N).
| Chemical Name | Property | Purity |
| High purity Helium | Non-toxic and non-flammable, highly stable | ≥99.999% |
