bids are invited for calibration gas mixture in new 10 ltre cylinder 00037685 , 00037683 , 00037687 , 1000173636 , 00037680 , 00037686 , 00037681 , 00037688 , 1000173637 , 1000173638 , 1000173639 , 1000173640 , 1000173641, calibration gas mixture fuel gas calibration gas -met. h2-gc, 10 ltr calibration gas mixture lpg compos calibration gas mixture natural gas calibration gas-reformer gas, h2 gc, 10ltr calibration gas mixture recyle gas calibration gas-purge gas, h2 gc, 10 ltr calibration gas mixture pfcc fuel gas calibration gas mixture sulphur spec calibration gas hydrocarbon in prop calibration gas mixture oxygenates 20% carbon dioxide gas in nitrogen 1.6 ltre btx gas in aluminium cylinder total quantity : 13