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