procurement of lab. chemicals / reagents under cwa ( wns ) ii division. , acetic acid ar 2.5 l , acetone ar 500 ml , ammonia solution500 ml , ammonium acetate ar500 gm , ammonium purpurate ( murexide ) 5 gm , l-ascorbic acid 500 gm , barium chloride500 gm , calcium carbonate 500 gm , 1, 5-diphenyl carbazide 25 gm , edta disodium salt dihydrate 500 gm , eriochrome black t 25 gm , eriochrome cyanine r25 gm , ethanol 500 ml , glycerol 500 ml , hydroxylamine hydrochloride 100 gm , hydrochloride acid2.5 l , magnous sulphate monohydrate 500 gm , mercuric iodide 100 gm , a-naphthylamine 100 gm , nitric acid2.5 l , petroleum spirit ( petroleum ether ) ( 40-60 degree celsius ) 500 ml , 1, 10 phenanthroline monohydrate 25 gm , potassium chromate 500 gm , potassium dichromate 500 gm , potassium iodide250 gm , potassium sodium tartarate500 gm , 2-propanol 500 ml , rhodanine indicator 25 gm , silver nitrate25 gm , sodium arsenite 100 gm , sodium hydroxide 500 gm , sodium thiosulfate 500 gm , spadns indicator 5 gm , starch soluble500 gm , sulphuric acid 2.5 l , sulphanilic acid 100 gm , zinc sulphate heptahydrate 500 gm , universal indicator solution ph 4-11100 ml , silver sulphate25 gm , zinc acetate 500 gm , gfc ( whatman 47 mm dia ) 1 pkt. / 100pcs , di-sodium hydrogen orthophosphate 500 gm