bids are invited for merck chemicals ammonia solution , ammonia chloride , ammonium sulphate , buffer tablets ph 4 , buffer tablets ph 7 , buffer tablets ph 9.2 , chloroform , citric acid , dimethyl amine , edta di sodium salt , formaldehyde , litmus paper red , manganese sulphate , methylene blue , oxalic acid di hydrate , petroleum benzine , potassium hydroxide pellets , potassium iodide , potassium per iodate , selenium powder , silicon anti foaming agent , silver sulphate , sodium diethyl dithio carbamate , sodium hydroxide pellets , sodium salicylate , sodium sulphide flakes , sulphuric acid , thiglycolic acid , universal indicator paper , zinc sulphate , zirconium oxychloride , sodium hydroxide flakes , copper sulphate , whatman no 40 125 mm ashless , whatman no 40 150 mm ashless , whatman no 41 125 mm ashless , whatman no 42 125 mm ashless , ordinary filter paper , phosphorus pentoxide 1 32 , edta - disodium salt (ongc) total quantity : 2394