bids are invited for lab acetone ar , acetonitrile hplc grade , methanol hplc grade , sulphuric acid , nitric acid , sodium hydroxide , hydrochloric acid , ammonia ar grade , hexane hplc grade , petroleum ether , diethyl ether , acetic acid , benzene , dichloromethane hplc grade , sodium sulphate anhydrous , sodium acetate , iso-propyl alcohol , sodium chloride , potassium dichromate , ethyl alcohol absolute , toluene , silica gel g 60 mesh size 230-400 , chloroform , potassium hydroxide , anhydrous ethyl ether 100 percent , sodium tungstate , sodium cyanide , ultra pure or type 1 water , methanol lcms grade , water hplc grade , phosphate buffer saline , certified buffer standard solution, ph 4, 7 and 9 or 10 , certified buffer standard solution, ph 4, b5020 , certified buffer standard solution, ph 7, qc1127 , certified buffer standard solution, ph 9 or 10, b4895 , benedicts reagents , silica gel g 60 mesh size , florisil 60- 100 mesh pr grade , magnesium sulphate anhydrous 63135-250g-f , psa primary secondary amine spe 52738-u , envi- carb spe 57210-u , dsc18 spe 52600-u chemicals and standards used in chemical analysis total quantity : 3965