supply of chemicals supply of chemicals as per appendix a , chemicals , potassium iodide 100g , copper sulphate pentahydrate ar 500g , selenium dioxide 100g , potassium sulphate lr- 500g , lead acetate 500g , potassium oxalate 500g , sodium hydroxide pellets 500g , hydrochloric acid , 500 ml , sulphuric acid lr : 2 . 5lit , acetic acid glacial : 2 . 5lit , acetone -2 . 5 lit , diethyl ether-2 . 5 lit , chloroform-2 . 5 lit , petroleum ether 60-80 degree c 2 . 5ltr , l-ascorbic acid 100g , fehlings solution a-500ml , fehlings solution b-500ml , benzene-2 . 5 lit , boric acid powder 500g , absolute ethanol , 99 . 9 % , 500ml , gum arabic ( 500g ) , nitric acid - 2 . 5lit , calcium chloride ( fused ) lr - 500g , phenolphthalein indicator solution , 125 ml , buffer solution ph-4-500ml , buffer solution ph-7-500ml , buffer solution ph-10 . 00-500ml , beta cyclodextrin 100g , span-20- 500g , span-60- 500g , methanol hplc grade-2 . 5lit , acetonitrile hplc-2 . 5 lit , ammonium acetate , hplc- 500g , sodium phosphate dibasic anhydrous extrapure ar - 500g , citric acid monohydrate - 500g