6 Industrial Gases-Namely, Oxygen, Nitrogen, Acetylene, Argon, Helium, Welding Grade CO2, Hydrogen Propane, Deuterium, Oxygen-Argon Combination, Oxygen-Carbon Dioxide Combination, Helium-Argon Combination, and Hydrogen-Nitrogen Combination; and Industrial Liquids-Namely, Oxygen, Nitrogen, Argon, Nitrous Oxide, Deuterium Oxide, and Carbon Dioxide