UN1956 COMPRESSED GAS, N.O.S. (ARGON, NITROGEN) 2.2 100 PPM CARBON DIOXIDE, 100 PPM ACETYLENE, 100 PPM ETHYLENE, 100 PPM ETHANE, 100 PPM HYDROGEN, 100 PPM METHANE, 100 PPM CARBON MONOXIDE, 45,000 PPM NITROGEN, 20,000 PPM OXYGEN ARGON BALANCE PRIMARY STANDARD, SIZE 150AL CUSTOMER OWNED CYLINDER