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Calibration Gas Mixture In 0.5 Ltr W/C Aluminium Canister Along With Fine Control Needle Valve Containing: Methane: 1000 Ppm, Ethane: 1000 Ppm, Ethylene: 1000 Ppm, Acetylene: 1000 Ppm, Hydrogen: 1000 Ppm, Carbon Dioxide: 5000 Ppm, Carbon Monoxide: 5000 Ppm, Nitrogen: Balance: Filling Pressure: 20 Kg/Cm2, Make: Chemtron/Upg/Ags/Alchemie Gases & Chemical Pvt. Ltd. Note: (I) The Gas Canister No. Should Be Punched Clearly On The Cylinder And Should Contain Pressure Gauge On The Canister To I