supply of chemicals and consumables etc . required for smooth running of different laboratories of rws purulia sub-division under purulia division , phe dte . ( for 3 months-1 supply of edta n150 ml solution for total hardness analysis ( 500m1 / pack ) make fisher / sigma / finer 2 supply of ammonia buffer solution fortotal hardness analysis ( 500 ml / pack ) . make:merck / fisher / sigma / finar 3 buffer ph 4.01@25 deg c calibration solution calibrated against nist traceable sbs ( 480ml pack ) suitable for inclab ph510 / 700 ph meter make: eutech / wtvv / eauiv 4 buffer ph 7.00 @25 deg c calibration solution calibrated against nist traceable sbs ( 480m1 pack ) make: eutech / wtwiequiv 5 buffer ph 10.01 @25 dec c calibration solution calibrated against nist traceable sbs ;480m1 pack ) make: eutechantw / equiv 6 reagent suitable for spectrophotometric analysis of iron potable water, range 0.02-3.00 mg / i soluble iron ( 1000 tests / pack ) make: merck / lovibond / palin / wtw 7 ironstandard solution 1000.mg / l traceable to srmfrom nisttraceable ( 125 ml / pack ) make: inorg venture / reagecon / merck / sigma / equiv 8 reagent suitable for spectrophotometric analysis of manganese in potable water min range : 0.01-0.7 mg / l of manganese, ( 250tests / pack ) make: marck / lovibond / palin / wfw 9 fluoride standard solution traceable to srm from nist traceable ( 500ml / pack ) make: lnorg vent / reagecon / merck / sigma / equivalent 10 spectrophotometric reagents for fluoride analysis, range:0.10-20.0 mg / l of f ( 250 test / pack ) make: marck / lovibond / palin / iv or equivalent 11 total ionic strength buffer solution- iii for fluoride estimation soln suitable for lonometric analysis of fluoride ( 475 ml / pack ) thermo-orion / merck / carlo erba 12 supply of extran / labolene / finklin neutral ph ( 5l / pack ) make: merck / fisher / finer / equiv 13 supply of hydrochloric acid laboratory grade ( 5 lit ) pack iron content 0.0001% max make: merck / fisher / finer / equiv 14 manganese standard solution traceable to srm from nist traceable ( 125 ml / pack ) make: lnorg vent / reagecon / merck / sigma 15 supply of consumables for bacteriological analysis by mf technique, radiation sterilie plate 15 x 60mm, 250nos a pack 16 turbidity standerd solution for tn 100ir make: eutech 17 turbidity standerd solution for tq iiooir make: merck 18 eriochrome black-t, ( 25 gm / pack ) ( 500ml / pack ) make - marker / fisher / sigma / finer 19 beaker glass 1000ml 20 burette, class a, certified as per iso 17025 requirement set of 4, cap: 50 ml, glass 21 glass rod 22 laboratory apron superior quality xl size 23 wash bottle500 mlpp 24 conical flask, 250 ml 25 nitrle gloves , pk of 100 nos ( 7.6 ) 26 sample collection bottles 100 ml 27 sample collection bottles 200 ml 28 sample collection bottles 250 ml glass 29 beaker 50 ml 30 cell for spectrophotometer ( 10 mm ) 31 ice box ( big size )