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You can check that your potentiostat is measuring the correct open circuit potential using a battery in series with the reference electrode. To perform the test, assemble a cell and attach the potentiostat leads as shown in the figure below. The reference electrode lead (RE) and the counter electrode lead (CE) are connected to one side of the battery and the sense lead (SE) and the working electrode lead (WE) are connected to the other side. Note that some cables do not have the grey sense lead. The black ground lead is not connected. This should result in a stable OC measurement of about 1.5 – 1.6 V if the battery is fresh. This value can be verified using either the Ecorr vs. Time technique within PowerCORR or a basic CV experiment in PowerCV. If you are using CV, make sure that your selected initial and final potentials are versus OC.
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