DC Amperometry Mode

DC (direct current) amperometry mode is a basic operating mode of an electrochemical detector. In DC mode a constant potential is applied between the reference and the working electrode.

Electrochemical detection measures current resulting from the application of potential (voltage) across electrodes in flow-through cells. The applied voltage causes oxidation or reduction of analyte molecules in the sample. The current produced is dependent on many factors; the most important of these is the analyte concentration. When you apply a constant potential between reference and working electrode, you can observe a proportional current, depending on the concentration of an oxidable or reducible substance.

Also, refer to Integrated Amperometry Mode