refilling of liquid chlorine gas cylinders of 900 kg. each capacity from authorized filling station for kamalnagar w.t.p site under cmd, phe dte., dist.- purba-bardhaman-1 carrying charges of empty chlorine toner cylinder of each capacity 900 kg from kamalnagar w.t.p. site to authorised filling station for filling of liquid chlorine gas including loading unloading and detention charges for vechicles and handling charges of hazardeous chlorine gas. ( 3 nos cylinder ) 2 refilling charges of liquid chlorine to the empty cylinder of 900kg each capacity from any authorised filling station. [ cost inclusive of charges and duties ] [ 3x850kg each = 2.55mt ] 3 carrying charges of refilled chlorine toner cylinder of each capacity 900 kg. from authorised filling stationto above mentioned site and detention charges for vechicles including handling charges of hazardeous chlorine gas. ( 3 nos cylinder )