tender for purchase of chemicals , purchase of chemicals and glassware , potassium oxalate monohydrate 99% extra pure 500 g , ammonium oxalate monohydrate 99% extra pure 500 g , oxalic acid dihydrate 99% extra pure 500 , stannous chloride dihydrate 97% extra pure 100g , ethylenediamine tetraacetic acid disodium salt 99% ar/acs 500 , ethylenediamine 98% for synthesis 500ml , ammonium metavanadate 98% extra pure 100g , hexamine 99% extra pure 500 g , glycine 98.5% extra pure 250g , potassium iodide 99% extra pure 250g , hydrochloric acid 37% extra pure 99.5% extra pure 2.5 lit , nitric acid 60% extra pure 500ml , ammonium fluoride 95% extra pure 500g , thiourea 98% extra pure 500g , ammonium sulphide solution in water 20% extra pure 500ml , sodium hydroxide pellet 97% extra pure 500g , iso-amyl alcohol 98% extra pure 500ml , zirconium oxychloride octahydrate 98% extra pure 100g , zinc oxide 99% extra pure 1000g , salicylaldehyde 99% for synthesis 250ml , potassium nitrate 99% extra pure 500g , bismuth oxychloride extra pure 100g , manganese(ii) acetate tetrahydrate 98.5% extra pure 500g , magnesium(ii) sulphate heptahydrate 99.5% ar/acs 500g , zinc(ii) sulphate heptahydrate 99.0% ar/acs 500g