PETROLEUM GAS, LIQUEFIED (ETHANE, PROPANE) 2.1 0.75% METHANE, 0.20% CARBON DIOXIDE, 32.65% PROPANE, 5.55% ISOBUTANE, 10.75% N-BUTANE, 3.00% ISOPENTANE, 2.70% N-PENTANE, 4.10% HEXANES PLUS ETHANE BALANCE, CERTIFIED, 1000CC PISTON CUSTOMER OWNED CYLINDER