supply of chemical - polyvinylpyrrolidone , potassium alumino silicate ,tetramethyl , tetrazolium , thiourea , toluene lowin sulfur , triphenyl tetrazolium , l trytophan ,tween 20 , urea , buffer capsule ph 4 , buffercapsule ph 7 , buffer capsule ph 9 , ammoniumsulphate , streptomycin sulphate , edta disodiumsalt , bovine serum albumin , ninhydrin , ethyl acetate , orthophosphoric acid , sodiumhypochlorite , ethanol , alpha keto glutaric acid ,barium chloride , bee wax , benzoic acid , borax ,bo.....