bids are invited for chemical ammonium iron ii sulfate hexahydrate , ammonium acetate , sodium acetate anhydrous , 2. propanol , sulfuric acid about , trisodium citrate dihydrate , triethanolamine , calcium chloride dihydrate , potassium chloride , potassium dichromate , ph 4.01 buffer solution , ph 7.00 buffer solution , ph 9.00 buffer solution , sodium hydrogen carbonate , phenolphthalein indicator , methyl red indicator , bromocresol green indicator solution , hydrochloric acid , stannous chloride dihydrate , potassium permanganate , azomethine-h , paraffin liquid light , magnesium oxide , ammonium molybdate tetrahydrate , ammonia solution , ammonium fluoride , oxalic acid dihydrate , acetic acid glacial , ammonium chloride total quantity : 247