Calibration Gas Mixture Cylinder For Dga( Methane 1000Ppm, Ethane 1000Ppm, Ethylene 10 00Ppm, Acetylene 1000Ppm, Hydrogen 1000Ppm, Carbon-Dioxide 5000Ppm, Carbon Monoxide 5000Ppm, N Trogen -Balance, Cylinder Volume-0.5 Litre In Canister [ Warranty Period: 30 Months After The Date Of Deliv Ery ] ]