FIELD: electrical engineering.
SUBSTANCE: proposed electrochemical cell has first working electrode 32, first counter-electrode 34, second working electrode 36, and second counter-electrode 38; electrodes are spaced apart so that reaction products from first counter-electrode 34 enter first working electrode 32 and reaction products from first and second counter-electrodes 34 and 38 do not enter second working electrode 36. Invention specification also gives method for using such electrochemical cells and for evaluating concentration of reduced or oxidized form of oxidizing-reducing material.
EFFECT: enhanced precision of concentration evaluation.
32 cl, 2 dwg
