supply of different chemicals, reagent, membrane filter etc. for 16 nos water testing laboratories of rws bankura sub -division under bankura division, phe dte.-1 manganese reagent, range 0.010-10 mg / l mn ( 250 test ) ( including all taxes ) 2 supply of manganese standard solution tracable to srm from nist ( mnn03 ) in hno3 05 mol / l -1000 mq / 1it mn ( including all taxes ) 3 supply of ferro spectral reagent ( fe-1 ) range 0.005-5.00 mg / l merck fe 1000 test ( including all taxes ) 4 supply of iron standard solution 1000 mg / l tracable to srm from nist tracable ( 125 ml / pack ) make: inorganic venture / reagecon / merck / sigma ( including all taxes ) 5 total ionic strength buffer solution-ill for fluoride estimation soln. suitable for ion meteric analysis of fluoride ( 475 ml pack ) ( including all taxes ) 6 tissue rolls ( medium ) -2x21mt ( including all taxes ) 7 micropippete variable volume single channel fully autoclavable with individual work certified riviera range 1000 microliter - 5000 microliter complete with 100 nos tips calibration certificate. ( including all taxes ) 8 consurnables for bacteriological analysis by mf technique membrane filter- cellulose nitrate, sterile- individually packed, white membrane, gridded, 47mrn dia, 0.45 micron porosity, pack of 100 circles mercklhimedial axiva ( including all taxes ) 9 supply of consumables for bacteriological analysis by mf technique, radiation sterilie plate l5x60mm, 250 nos a pack ( including all taxes ) 10 dpd tablet for residual chlorine, easily dispersible, suitable for comparometric determination. pack of 250 tabs ( including all taxes ) 11 ph paper 2 -10.5 ( including all taxes ) 12 edta n / 50 solution, for total hardness hardness analysis ( 500milpack ) make: merck / fisher / sigma / finar 13 hydrochloric acid laboratory grade ( 5 lit ) pack iron content: 0.0001 % max, make: merck / fisher / finar ( including all taxes ) 14 sodium thiosulfate pentahydrate, 500 gm ( including all taxes ) 15 sulfuric acid about 98% analytical grade, 4 x 500ml pk ( including all taxes ) 16 starch soluble analytical quality, 500gm ( including all taxes ) 17 potassium dichromate 0.0167m ( 0.1n ) , nist traceable, 1 lit including all taxes ) 18 potassium iodide analytical quality ( 100 gm / pack ) assay:min.99.8% ( analy1ical grade ) ( including all taxes )