CGA Charts

Pure Gases / CGA NUMBER

Acetylene……………………………………………………510 (except small cylinders)

Air (All but medical grade)………………………….590 (Medical Air is CGA-346)

Argon…………………………………………………………580

Carbon Dioxide………………………………………….320 (fitting requires flat washer)

Helium………………………………………………………..580

Hydrogen…………………………………………………….350

Methane………………………………………………………350

Nitrogen………………………………………………………580

Oxygen………………………………………………………..540

Propane……………………………………………………….510

Common Mixtures / CGA NUMBER

CO2 in Air (USP)………………………………………….Call your supplier and ask

CO2 in Argon (Welding gas mixture)…………………580

USP medical mixtures……………………………………..Call your supplier and ask

Industrial Laser mixtures………………………………… 580 or 350

Clinical Blood Gas Mixtures……………………………..500 (normally) could be 973

Lung Diffusion Gas Mixtures……………………………..500

Biological Atmospheres……………………………………350 or 580 (350 if contains hydrogen)

Medical Laser Mixtures……………………………………500

Electron Capture……………………………………………..350

Nuclear Counter Mixtures…………………………………350

Spark Chamber Mixtures………………………………….580

Flame Ionization Fuel Mixtures…………………………..350

Flame Test Mixtures………………………………………..350

EPA Protocol Mixtures…………………………………….Call your supplier

Lecture Bottles………………………………………………..170 (normally)