Air, Breathing Grade 99.5 (+) 2 0.1 Oxygen, UHP 99.98 Helium, HP 99.995 3.5 5 0.5 Helium, Chromatographic 99.9999 0.2 1 0.1 Argon, Liquid Dewar(350psi) 99.998 1 1 0.5 160 liter Nitrous Oxide, AA grade 99 3 1 20 Acetylene, AA grade 98 Hydrogen 99.9995 1.0 1.0 1.0 Helium 99.9995 1.0 1.0 1.0 Zero Grade Air 0.05 Liquid Nitrogen 99.997 1.0 2.0 0.5 Argon 99.999 4 2.0 1.0 Carbon Dioxide 99.95 With Siphon Tube Nitrogen 99.95 Nitrogen UHP 99.9995 1.0 1.0 0.1 Most gases are for 300-cylinder size. Specialty gases are listed separate. Argon, UHP (99.999 %) A size cylinder Limit of Impurities –– Total impurities less than 10ppm with an approximate breakdown as listed below: Oxygen 1-2 ppm Hydrogen 0 ppm Nitrogen 2-4 ppm Carbon Dioxide less than 1 ppm Hydrocarbons (as methane) less than 1 ppm Dew Point -900F (3.5 ppm)
