bids are invited for item 1 - potassium phosphate monobasic solution 1l , item 2 - potassium phosphate dibasic solution 1l , item 3 - pyrogallol 10g , item 4 - laminarin from laminaria digitata 500mg , item 5 - chitin azure 100mg , item 6 - pvdf membrane filter, 0.22 um pore size-durapore, filter diam. 25 mm, hydrophilic 2 pack , item 7 - curcumin 500mg , item 8 - bisdemethoxycurcumin 5mg , item 9 - demethoxycurcumin 5mg , item 10 - hexadecyltrimethylammonium bromide 100g , item 11 - canada balsam 25ml , item 12 - potassium nitrate 500g , item 13 - potassium sulfate 500g , item 14 - calcium chloride dihydrate 500g , item 15 - magnesium sulfate heptahydrate 250g , item 16 - manganese(ii) chloride tetrahydrate 500g , item 17 - ammonium molybdate tetrahydrate 100g , item 18 - zinc sulfate heptahydrate 500g , item 19 - copper(ii) sulfate pentahydrate 500g , item 20 - iron(ii) sulfate heptahydrate 500g , item 21 - calcium nitrate tetrahydrate 500g , item 22 - ammonium sulfate 500g , item 23 - sodium molybdate dihydrate 500g , item 24 - boric acid 500g , item 25 - manganese sulphate monohydrate 500g , item 26 - ammonium dihydrogen phosphate 500g , item 27 - edta, disodium salt, dihydrate 100gm , item 28 - o-phenanthroline 500mg , item 29 - acetone 500ml , item 30 - acetonitrile, hplc 500ml , item 31 - methanol 500ml , item 32 - formic acid hydrazide 25g , item 33 - water, hplc 1l , item 34 - hydrochloric acid abt.35% pure 500ml , item 35 - acetic acid glacial, 1000ml , item 36 - iodine resublimed 100g , item 37 - sodium carbonate anhydrous, hi-ar 100g , item 38 - folin and ciocalteus phenol reagent, 100ml , item 39 - sodium nitrite, hi-lr 500g , item 40 - sodium hydroxide pellets 500g , item 41 - l-ascorbic acid 25g , item 42 - citric acid anhydrous 500g , item 43 - ethyl acetate, hi-lr 2.5l , item 44 - ethyl acetate, hplc 1l , item 45 - petroleum ether 40 - 60 c, hi-lr 500ml , item 46 - gallic acid monohydrate 500g , item 47 - potassium chloride 250g , item 48 - curcumin