Standard Calibration Gas Canister For Dga Consisting Of Methane, Ethane,Ethyl Ene, Acetylene, Hydrogen Each 1000 Ppm, Co And Co2 Each 5000 Ppm And Nitrogen Balance-01 No, Each Gases 500 Ppm - 01 No, Each Gases 100 Ppm -01 No, With Septa And Knob Arrangement To Draw Sample Directly From Canister Using Gc Syringe, Preparation Tolerance+/- 20 Perce Nt And Shelf Life 12 Months. Canister Capacity 0.5 Litres, Filling Pressure 20 Kg/Sq.Cm With Te St Certificate And Suitable Septum As Spares. [ Warranty Period: 12 Months After The Date Of Deliv Ery ] ]