bids are invited for methanol toluene potassium hydroxide sodium hydroxide calcium carbonate calcium chloride (fused) hexane fraction from petroleum acetone dichloromethane hexane for hplc spectroscopy chloroform for hplc spectroscopy phthalic acid (pure 99%) potassium dihydrogen orthophosphate (pure) potassium phosphate dibasic anhydrous ethanol ammonia solution extra pure ar 30% 2-(2-hydroxyphenyl)benzoxazole 1-phenyldiazenyl)naphthalen-2-ol (98%, hplc or sudan i dye) 2-(2-hydroxyphenyl)benzimidazole n-butyl alcohol 2-(2-hydroxyphenyl)benzothiazole isopropanol phenosafranin dye quercetin thioflavin orthophosphoric acid berberine or natural yellow 18 l-lysine l-leucine guanidine hydrochloride aluminium sulphate octadecahydrate ammonium sulphate aluminium nitrate nonahydrate cupric acetate monohydrate methylene blue trihydrate citric acid anhydrous cadmium sulphate ammonium molybdate tetrahydrate ethyl acetate tetrahydrofuran (thf) octafluoronaphthalene benzene-1,2,4,5-tetracarbonitrile, 97% 1,2,4,5-tetrafluorobenzene, 98% diethyl benzhydrylphosphonate, 98% rhodamine b rhodamine 6g rhodamine 800 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-6-(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2h,5h)-dione, 98% (stabilized with cuhq & mgo) 4,8-dibromobenzo[1,2-c:4,5-c′]bis([1,2,5]thiadiazole), 95% potassium iodate 2,5-difluoroterephthalonitrile, 97% sodium hydride potassium iodide potassium carbonate 2,2-(1,4-phenylene)diacetonitrile cesium carbonate, 98% 2-hydroxy-1,4-naphthoquinone tetrahydrofuran (thf), dried, 99.5%, ≤0.005% water hydrazine hydrochloride hydrazine, 1.0 m in thf isopentyl nitrite anthranilic acid 9-(2-hydroxyethyl)anthracene total quantity : 289