XHCODMn-90B Automatic Permanganate Index Monitor

      This device is designed based on the sequential injection technique. For this monitoring, national standard method and high-precision injection pump and multiple-way valve are adopted, to sequentially and quantitatively inject the water sample and reagent into the digestion tube for reaction. After reduction by sodium oxalate, the titration end point is determined by back titration, and then the volume of potassium permanganate is measured to calculate the permanganate index (CODMn) of the water sample under test.