UN1956 COMPRESSED GAS, N.O.S. (ARGON, NITROGEN) 2.2 1,000 PPM CARBON DIOXIDE, 1,000 PPM ACETYLENE, 1,000 PPM ETHYLENE, 1,000 PPM ETHANE, 1,000 PPM HYDROGEN, 1,000 PPM METHANE, 1,000 PPM CARBON MONOXIDE, 30,000 PPM NITROGEN, 10,000 PPM OXYGEN ARGON BALANCE PRIMARY STANDARD, SIZE 150AL CUSTOMER OWNED CYLINDER