Calibration Gas Mixture For Dga With Needle Valve For Drawing The Gas. Each Can Contain 10Ltrs. Of Gas At Pressure 2 0Kg/Cm2 Having The Following Composition. Methane, Ethane, Ethylene, Acetylene And Hydrogen Should Be 1000 Ppm.,Co2 And Co Should Should Be 5000 Ppm And Balance Nitrogen Along With Test Composition Certificate. [ Warranty Period: 30 Months After Th E Date Of Delivery ] ]