and then 'Add to homescreen'.Industrial and Medical Gas Specifications (U.S.)
Argon
| Purity | 99.997% |
| Oxygen | Less than 0.0005% |
| Dew Point |
Liquid Argon: –90ºF or lower |
Helium – Gaseous
| Purity | 99.995% |
| Oxygen | Less than 0.0005% |
| Dew Point |
–90ºF or lower |
Helium – Liquid
| Purity | Not less than 99.999% |
| Oxygen | Not more than 0.0001% |
| Dew Point |
–105ºF or lower |
Hydrogen – Gaseous
| Purity | 99.95% |
| Oxygen | Less than 0.0005% |
| Dew Point |
Gaseous Hydrogen: –90ºF or lower |
Hydrogen – Liquid
| Purity | 99.999% |
| Oxygen | Less than 0.0002% |
| Dew Point |
Liquid Hydrogen: –105ºF or lower |
Medical Helium – Gaseous – meets USP
| Purity | Not less than 99.0% |
| Oxygen | Not more than 1.0% |
| Carbon Monoxide |
Not more than 0.001% |
| Odor |
None |
Medical Nitrogen – meets Nitrogen NF
| Nitrogen and trace inerts | 99.0% |
| Oxygen | Not more than than 1.0% |
| Carbon Monoxide |
Less than 0.001% |
| Odor |
None |
Medical Oxygen – meets Oxygen USP
| Oxygen | 99.0% |
| Odor |
None |
Nitrogen
| Nitrogen and trace inerts | 99.998% |
| Oxygen | Less than 0.001% |
| Dew Point |
Liquid Nitrogen: –90ºF or lower |
Oxygen
| Purity | 99.5% |
| Inerts | Less than 0.5% |
| Dew Point |
Liquid Oxygen: –80ºF or lower |