supply of set of items for dgaas , set of items for dgaas detailed: 1) calibration gas mixture for dga with needle valve for drawing the gas . each can contain 10 litres of gas at pressure 20kg/cm2 in aluminium can have the following composition: a) methane- 1000ppm, b) ethane-1000ppm, c) ethylene - 1000ppm, d) acetylene-1000ppm, e) hydrogen - 1000ppm, f) carbon diox ide-5000ppm, g) carbon monoxide-5000 ppm, remaining gas - nitrogen gas with calibration certificate. qty:02 nos, 2) vacuum grease (pack of 50 gms), qty:10 nos. make/brand - kshama or equivalent warranty: up to 30 months from the date of delivery [ warranty period: 30 months after the date of delivery ] ]