UN1954 COMPRESSED GAS, FLAMMABLE N.O.S., (ETHYLENE, ETHANE) 2.1 2 PPM CARBON MONOXIDE, 3 PPM PROPYLENE, 5 PPM ACETYLENE, 5 PPM CARBON DIOXIDE, 5 PPM METHANOL, 5 PPM HYDROGEN, 150 PPM METHANE, 200 PPM ETHANE, ETHYLENE BALANCE CERTIFIED, SIZE 150AL CUSTOMER OWNED CYLINDER