supply and delivery of chemicals_ reagents and consumables for 15_fifteen_ nos . laboratories under burdwan division_ p . h . e . dte . , hichrome tm chromogenic coliform agar , for simulteneous determination & count of escherichia coli and total coliforrns in water samples as per iso 9308-1:2014 , l00 gm pack mercklhimedia , consurnabies 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 merckihimedia / axiva , edta n / 50 solution , for total hardness hardness analysis ( 500ml / pack ) make: merckifisherlsigmalfinar , ammonia buffer solution for total hardness analysis ( 500ml / pack ) make: mercklfisherlsigmalfinar , turbidity standard solution for tq 1100 ir , make: merck , reagent suitable for spectrophotometric analysis of iron in potable water , range 0 . 005-5 . 00 mg / l soluble iron ( 1000 tests / pack ) make: merck / lovibond / palin / wtw , lronstandard solution 1000 . mg / l traceable to srmfrom nisttraceable ( 125 ml / pack ) make: inorg venture / reagecon / merck / sigma / equiv , 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 , manganese standard solution traceable to srm from nist traceable ( 125 ml / pack ) make: inorg vent / reagecon / merck / sigma , sterilising ether solvent ( biosol ) ( 450ml / pack ) , extran / labolene / finklin ( 5l / pack ) make: merck / fisher / finar , dpd tablet for residual chlorine , easily dispersible , suitable for comparometric determination , pack of 250 tabs , hydrochloric acid laboratory grade 5ltr , petridisc auticlavable borosilicate glass 60x15 mm , tissue roll , alluminium foil , standard buffre solution ( ph 4 . 01 ) , standard buffre solution ( ph 7 . 00 ) , standard buffre solution ( ph 10 . 01 ) , triethanolamine ( 500 ml ) , potassium iodide er , 100gm , make - thermo / alfa / acros / merck / sigma / finar , tin ( ii ) chloride dihydrate analytical quality solubility: 10% solution in dil . hcl should be clear & assay: min . 99 . 00% , ( 100gm / pack ) , make: merck / fisher / sigma / finar , lead ( ii ) acetate trihydrate , assay: min 99% 500gm / pack ) make: merck / fisher / sigma / finar , low lead glass woll ( 250gm ) , chloroform analytical quality , dry solvent , water content maximum: 0 . 01% max ( 500ml / pack ) make: merck / fisher / sigma / finar , morpholine , 500ml , make - thermo / fisher / merck / finar / himedia , silver diethyldithiocarbamate for arsenic analysis , acs grade assay: 99% min ( 5 gm / pack ) thermo / fisher / acros / merck / sigma / bdh , arsenic standard solution traceable to srm 1000 mg / l as , nist traceable ( 125 ml / pack ) make: inorg venture / reagecon / merck / fisher , zinc fillings , 500gm , make - thermo / merck / himedia / loba , duster fine ( cotton ) , big hand gloves ( pair ) ( skin save surgical ) , sulphuric acid , er , 500ml , potassium di chromate , er 500gm , calcium carbonate , sq , 500gm , spectophotometric reagent for nitrate test , range 0 . 1-25 . 0 merk mg / 1no3-n , 0 . 4-110 . 7 mg / no3 , 250 tests , towel ( std ) , absorbence cotton roll , ph paper ( 10 books ) , potassium chloride analitical reagent quality assay: min 99 . 5% ph oh 5% solution , 9 . 0-9 . 8 , 500gm make: merck / fisher / sigma / finar , acetone lab grade ( 500ml / pack ) make: merck / fisher / sigma / finar , solvent for lamp ( 5lit pack ) , silicon grease ( 50gm ) , residual chorine kit ( liquid ) , 600 tests , make: merck , methyl orange indicator ( 125ml ) , make: himedia