Argon; Helium; Carbon dioxide (CO2) filled cylinders, cartridges and canisters for household purposes; Carbon dioxide (CO2) filled cylinders, cartridges and canisters for industrial purposes for use in powering tools, air guns and air brushes; Chlorine for swimming pools; Dry ice; Nitrous oxide for industrial use; Refrigerant gas for use in industrial cooling systems and air conditioning systems; Unexposed photographic films