I used 'Corrtest CS300' to measure an electrode current signal. The current value I get is after amplification. How to know the amplitude of the electrode signal before amplification?
The origin of the current you're measuring isn't clear from your question. If you're asking about a current generated through your cell by the potential between your electrolyte and one of your electrodes, then that should be measurable with a simple multimeter. Although I haven't used the Corrtest range of potentiostats, all the brands I've used (Gamry, Metrohm, Ivium) give a real-time readout on the software interface of the current measured at the WE. It's not always a passive measurement, however, because the potentiostat itself will impose some potential on the cell anytime it's connected.
We have developed a biosensor to detect biological species using electrochemical electrode. we used 'Corrtest CS300' to read the electrical signal of the electrode. The electrical signal (detected by the electrode) will be used in further downstream process. The measured signal by the CS300 are amplified, however, we need to know the value of the signal before amplification. How to know the' Signal Gain' used by the 'CS300 in this measurement. The unamplified signal should be known, as it determines the characteristics of the downstream process.
The numerous commercial potentiostats indicate current through the working electrode of an electrochemical cell. All amplification and data processing are hidden for the end-user. So your reading should be direct data about current flow through the working electrode (if another is not written in a specification to your potentiostat).
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