bids are invited for calibrated gas cylinders mse methane gas , co nitrogen , co2 nitrogen , nitrogen gas cylinder , oxygen gas , dissolved acetylene gas , nitrogen gas , calibration gas mixture , carbon dioxide , oxygen , nitrogen , uhp helium refilling of methane gas 99 percent , refilling of co nitrogen in 47st, refilling of co2 nitrogen in 47st, refilling of nitrogen gas cylinder 99 percent, refilling of oxygen gas 99 95 percent , refilling of dissolved acetylene gas 99 percent, refilling of nitrogen gas cylinder 99 percent, refilling of calibration gas mixture, refilling of carbon dioxide 99 percent, refilling of oxygen 99 percent, refilling of nitrogen gas cylinder 99 percent, refilling of oxygen 95 percent, oxygen 80 percent balance nitrogen filled in 10 st, oxygen 60 percent balance nitrogen filled in 10 st, refilling of oxygen 99 percent with 7m3 gas filled in 47st, refilling of uhp helium 99 with 7m3 gas in 47st searched string: refilling of methane gas 99 percent compressed oxygen gas as per is 309, spinal support searched string: refilling of co nitrogen in 47st corrosion inhibitor for oil and gas lines in presence of h2s (ongc), refillable seamless steel gas cylinders, air entrainment apparatus for determination of air content of fresh concrete, liquid nitrogen in tankers, installation & commissioning of scpc vsat, books, boot black patent leather (coast guard of india), liquid nitrogen gas, real time rt-pcr test kit for detection of sars-cov-2 infection and its omicron variant of concern (voc), digital physiograph system 1 16searched string: refilling of co2 nitrogen in 47st total quantity : 22