UN1956 COMPRESSED GAS, N.O.S. (ARGON, NITROGEN) 2.2 1,000 PPM ACETYLENE, 1,000 PPM CARBON MONOXIDE, 1,000 PPM ETHANE, 1,000 PPM ETHYLENE, 1,000 PPM HYDROGEN, 1,000 PPM METHANE, 4,000 PPM CARBON DIOXIDE, 2% OXYGEN, 11.7% NITROGEN, ARGON BALANCE CERTIFIED, SIZE 150AL CUSTOMER OWNED CYLINDER