supply of pure helium gas and liquid helium , supply of helium gas of purity -99.995% to iuac-new delhi in the suppliers quadconsisting of cylindershaving total capacity ~ 400m3 (per quad) (unit-m3) , transportation charge for each to-and-fro tripfor supplying ~ 400m3in each truck)ofhelium gas upto iuac- new delhi (unit per trip) , per day basis retaining charges of the truck with the ordered quads beyond first 5 working daysat iuac-new delhi (unit per day) , supply of liquid helium in 250l dewars or moreat iuac/aiims-new delhi (unit-litres) , transportation charge per trip ( = 1000l ) of supplyof liquid helium at iuac/aiims new delhi (unit -per trip) , per day retaining charges for the helium dewars beyond the first 5 days at iuac /aiims new delhi unit per day) , gst