bids are invited for 1300002189 - n-heptane,hplc grade, 1000ml , 1300003526 - ammonium ferrous sulphate hexahydrate,gr,500gm with minimum assay purity of 99.0% , 1300003516 - ammonium thiocyanate ar 500g, , 1300036976 - antimony trioxide,100 gm,(cas:1309-64-4) , 6000108446 - di ammonium hydrogen phosphate, ar 500g , 1300001926 - potassium iodide extra pure ar,assay:99.8%,chloride& bromide:0.01% max,100gm , 1300001944 - potassium bromide a.r 500 gms , 1300002093 - oxalic acid ar,minimum assay 99.5%,white crystalline powder, 500gm, , 1300001934 - potassium ferricyanide assy min 98% 500grm , 1300001555 - sodium hydroxide 500g, ar sd code 20252 k05 or equal , 1300001562 - sodium chloride 500g, ar sd fine 20241 k05 or equal , 1300003534 - ammonia solution gr, 2.5 ltr.,merck:61775225001046 or equivalent , 1300001164 - toluene hplc/chromatographic grade 1000ml,with minimum assay purity 99.8% and refractive index at 20 deg c. between 1.496-1.497 or e quivalent , 1300002186 - n-hexane, purity >99%, ar/gr, 2.5ltr , 1300037880 - nylon membrane filter paper, pour size: 0.8 micron, diameter: 47 mm, pack of 100. , 1300001301 - test tube cleaning brushes, soft , 1300003357 - bottle washing brush total quantity : 1