supply of laboratory consumables , gelatin soloution -100 ml , potassium chloride - 500g , potassium phosphate monobasic - 500g , sodium chloride (molecular biology) - 500g , phaspahet buffered saline , ph 7.4, 10x, 5 x 100 ml , sodium hydroxide pellets - 500 g , di- sodium hydrogen phosphate anhydrous - 500g , sodium pyruvate solution - 100 ml , ethidium bromide solution - 10ml (10mg/ml) , trizma free base -500g , dimethyl sulphoxide - 100 ml , acetic acid glacial (sq)-2.5 l , isopropyl alcohol -2.5 l , molecular grade chloroform - 100 ml , rna express reagent - 100 ml , molecular grade water -100 ml , 100bp dna ladder - 200ln , 50bp dna ladder - 200ln