procurement of chemicals for water testing laboratories under howrah division phe dte.- 1 arsenic standard solution ( 125 ml / pack ) arsenic standard solution traceable to srm 1000 mg / i as r nist traceable ( 125 ml / pack ) make: inorg venture / reagecon / merck / equiv 2 biosol ( 450 ml / pack ) sterilising ether solvent ( biosol ) ( 450ml / pack ) 3 cc agar ( 100 gm / pack ) cc agar ( 100 gm / pack ) 4 edta n / 50 solution ( 500 ml / pack ) edta n / 50 solution, for total hardness hardness analysis ( 500mlfpack ) make: merckifisherlsigmalfinar 5 ferosofectral reagent ( fe 1 ) test kit ( 1000 tests / pack ) reagent suitable for spectrophotometric analysis of iron in potable water, range 0.02-3.00 mg / l soluble iron ( 1000 tests / pack ) make: merck / lovibond / palin / wtw 6 hydrochloric acid 37 % or 12 m ( 500 ml / pack ) hydrochloric acid min: 36.5%, analytical quality & acs grade, arsenic content: 0.01 ppm max. ( 500mi / pack ) make: merck / fisher / sigma / finar 7 iron standard solution ( 125 ml / pack ) lronstandard solution 1000.mg / l traceable to srmfrom nisttraceable ( 125 ml / pack ) make: inorg venture / reagecon / merck / sigma / equiv 8 manganese lab test kit ( 250 tests / pack ) reagent suitable for spectrophotometric analysis of manganese in potable water range: 0.1-10 mg / l of manganese, ( 250tests / pack ) make: merck / lovibond / palin / wtw 9 manganese standard solution ( 125 ml / pack ) manganese standard solution traceable to srm from nist traceable ( 125 ml / pack ) make: inorg vent / reagecon / merck / sigma 10 tissue paper roll ( 60 m / roll ) tissue rolls ( medium ) -2x21mt 11 silver diethyl dithio - carbamate for analysis ( 5 gm ) acs grade, make : merck / sigma 12 turbidity standard setfor tb 210 ir ( 1 full set ) conical flask ( 250 ml ) 13 conical flask ( 250 ml ) conical flask ( 250 ml ) 14 petriplate ( disposable ) consumables for bacteriological analysis by mf technique. radiation sterilie plate 15x60mm, 250 nos a pack 15 conductivity standard solution, 1413us, 480 mlconductivity standard solution, 1413us, 480 ml 16 silver nitrate analytical grade 25 gm silver nitrate analytical grade 25 gm 17 membrane filter ( pack of 100 circles ) consumabies for bacteriological analysis by mf technique, membrane filter- cellulose nitrate, sterile- individually packed, white membrane, gridded, 47mm dia, 0.45 micron porosity, pack of 100 circles merckihimedia / axiva 18 add 10% agency profit