Hi Oluwafemi Abubakar

Our learning center article on Ohmic drop might help you: https://www.biologic.net/topics/ohmic-drop-correction-a-means-of-improving-measurement-accuracy-with-potentiostats/#:~:text=The%20ohmic%20drop%20in%20electrochemistry,as%20surface%20films%20or%20connectors.

It links through to two more detailed App Notes, one of which specifically covers Ohmic drop measurement techniques.

Dear Oluwafemi Abubakar , an application note is available that explains the effect of the ohmic drop and double layer capacitance on the current response of a redox system to a potential sweep:

https://www.biologic.net/documents/cv-simulation-2-electrochemistry-application-note-41-2/

For EIS, you can consult our tutorials on EIS that explains the basics of EIS and how to determine Cdl and the ohmic drop:

https://www.biologic.net/documents/introduction-to-eis-electrochemical-impedance-spectroscopy-with-ec-lab-impedance/

Please let me know if you have any question on these resources.

Best regards,

Nicolas Murer