supply and delivery of chemicals , reagents and consumables for 14 ( fourteen ) laboratories under burdwan division , p . h . e . dte . , 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 , turbidity standard solution for tq 1100 ir , make: merck , turbidity standard solution lovibond tb 210 ir , 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 , 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 , hydrochloric acid laboratory grade 5ltr , petridisc autoclavable pp . 60x15 mm , standard buffre solution ( ph 4 . 01 ) , standard buffre solution ( ph 7 . 00 ) , standard buffre solution ( ph 10 . 01 ) , 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 ) , make : merck , 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 , absorbence cotton roll , ph paper ( 10 books ) , acetone lab grade ( 500ml / pack ) make: merck / fisher / sigma / finar , solvent for lamp ( 5lit pack ) , protection mask ( good quality ) , arsenic generator 100ml , complete with glass wool adaptor , absorber tube for arsenic testing , complete with 5ml volumetric apparatus , borosilicate glass and all matching standard joint . , tong ( steel ) , plastic dropper ( 3 ml ) , cuvate ( cell ) for spectophotometer ( 50 mm . ) ( in pair ) , cuvate ( cell ) for spectophotometer ( 20 mm . ) ( in pair ) , pipett succer ( 25ml ) , autoclavable wide mouth pp container ( 250 ml ) , ldpe container for sample collection ( 200 ml ) , ldpe container for sample collection ( 100 ml )