A buffer solution (pH 8.5) was prepared by dissolving 85 g ammonium chloride plus 1 g disodium ethylenediamine tetraacetic acid dihydrate (EDTA) in 1000 ml of water.
A buffer solution (pH 8.5) was prepared by dissolving 85 g ammonium chloride plus 1 g disodium ethylenediaminetetraacetic acid dihydrate (EDTA) in 1000 ml of water.