FIELD: analytical chemistry; evaluating concentration of analyzed substance in carrier.
SUBSTANCE: electrochemical sensor used for analytical evaluation of liquid sample has flat strip with at least two side edges, sample taking cell inside mentioned strip, at least two electrodes communicating with mentioned cell, and slit in at least one side edge communicating with mentioned cell to pass liquid sample into mentioned cell.
EFFECT: enhanced measurement accuracy, reduced difference in readings, reduced amount of analyzed substance sample.
8 cl, 15 dwg
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