bids are invited for mercury (ii) chloride - gr grade , potassium chloride - gr grade , formaldehyde solution - gr grade , potassium iodide - gr grade , soluble starch - gr grade , sodium thiosulphate pentahydrate - gr grade , sodium carbonate - ar grade , sodium sulphite - ar grade , hydrogen peroxide (30%) - ar grade , n-(i-naphthyl)-ethylenediamine di-hydrochloride (neda) - ar grade , sodium nitrite (98%) - ar grade , sulphanilamide - ar grade , ortho-phosphoric acid (85%) - gr grade , sodium nitrate - ar grade , sodium nitrite - ar grade , ammonium chloride - ar grade , potassium nitrate - ar grade , calcium nitrate 99% pure - ar grade , sodium chloride - ar grade , sodium bromide - ar grade , sodium sulfate - ar grade , e.d.t.a - gr grade , sulphamic acid - gr grade , iodine resublimed - gr grade , mercuric iodide (red) - ar grade , concentrated hcl - gr grade , sodium metabisulfite - ar grade , pararosaniline - ar grade , concentrated h2so4, 99.5% - ar grade , sodium hydroxide - ar grade , sodium arsenite - ar grade , magnesium nitrate hexahydrate - ar grade , sodium fluoride - ar grade , potassium phosphate monobasic or potassium dihydrogenphosphate - ar grade , isopropanol - ar grade total quantity : 1