UN1956 COMPRESSED GAS, N.O.S. (NITROGEN, METHANE) 2.2 1000 PPM ETHANE, 1000 PPM ETHYLENE, 1000 PPM ISOBUTANE, 1000 PPM METHANE, 1000 PPM N-BUTANE, 1000 PPM PROPANE, 1000 PPM PROPYLENE, NITROGEN BALANCE CERTIFIED, SIZE 6AL CUSTOMER OWNED CYLINDER