This transducer incorporated the counter and the pseudoreference electrodes. The micropumps and microvalves integrated in the fluidic platform allowed an automatic management of the liquids, either sample, calibration stock, or background solution.
As before, the calibration curve was constructed by chronoamperometry using glucose standard solutions. According to the voltammetric response (data not shown), a set potential of +750 mV vs gold pseudoreference was chosen, which was 150 mV more positive than that used when the sensor was calibrated in batch using a standard Ag/ AgCl reference electrode.