Tender Brief : Supply Of standard calibration gas canister for dga , 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 er... Read More