FIELD: analysis. SUBSTANCE: device has indication electrode, which is designed as group of identical electrodes, two comparison electrodes and two additional electrodes. All electrodes have same size, are made from same current-conducting material and are mould in common housing. Said electrode system is introduced inside electric-chemical unit and one pair of electrode is connected to polarization meter, while another pair of electrodes is connected to additional source of polarizing voltage. Identical indication electrodes are connected to additional source of polarizing voltage. They are also connected to measuring circuit of polarization meter through electronic switch. After each measuring cycle their are switched back to circuit of additional source of polarizing voltage, where said electrodes are cleared by induced voltage. System of electrodes rotates in order to achieve sensitivity and selectivity. EFFECT: increased field of application in order to apply all method of analysis of voltage-current characteristics. 7 cl, 5 dwg
