bids are invited for annual requirement of chemicals 2022 23 magnesium sulphate , methyl orange indicator , methyl red indicator , manganese sulphate , murexide ammonium purprate , mercuric sulphate , nitric acid -70 percent , nitric acid , oxalic acid , orthophosphoric acid 88 percent , 1,10- orthophenanthroline 1-10 phenanthroline monohydrate , perchloric acid 70 percent , petroleum benzine , potassium chromate , potassium dichromate , potassium iodide , potassium periodate , potassium permanganate , potassium hydrogen phthalate , silver nitrate , silicon grease high vacuum grease , sodium arsenite , sodium carbonate , sodium chloride , sodium fluoride , sodium hydroxide pellets , sodium nitrate , sodium oxalate , sodium sulphate anhydrous , stannous chloride , sodium thiosulphate , starch soluble , sulphanillic acid , sulphamic acid , sodium bismuthate , sulphuric acid 98 percent , tri-n-butyl phosphate tributyl phosphate assay min.0.99 percent , xylenol orange indicator , buffer tablet ph 9.0 10 sachet , buffer tablet ph 6.99-7.00 10 sachet , buffer tablet ph 4 10 sachet , ph paper 1-10 universal with colour scale , paper ind, 0.5-5.5 ph with colour chart , ortho-tolidine , sodium azide total quantity : 20346