tender for purchase of chemicals , purchase of chemicals , l-leucine , 2,2-azino-bis (3-ethylbenzothiazoline-6- sulfonic acid) diammonium salt , 2,2-diphenyl-1-picrylhydrazyl , streptomycin sulphate , sulfuric acid pure , ampicillin sodium salt , quercetin dihydrate , tween 20 , rutin trihydrate , 2-methoxyethanol , ethyl acetate , bromocresol green indicator , chloroform , bromophenol blue indicator , bromocresol purple indicator , bromothymol blue indicator , acetone , p-cresol , polystyrene , phenol red sodium salt , ammonium sulphate , calcium chloride dihydrate , folin & ciocalteus phenol reagent , ninhydrin , phyta wrap , sterile scalpel blade no.10 , sm agar , peptonized sm powder