The measurement results qualitatively confirmed with the iodine experiments in model media then decolorized a nearly black solution of iodine-iodide which then was of the orized by adding a pulse of thiosulfate to the top surface liquid. With video cameras one can simply observe the transport of thiosulfate through a transparent Plexiglas vessel and the most important point to note is that the progress of the top to bottom mixing appears stepwise from impeller to impeller The compartments developing around each impeller thus act resistances to a direct now of the reactant through the as vessel