All electrodes from any supplier worldwide to date show certain levels of irreproducibility when used in impedance applications. I am actively searching for electrodes for impedance that are equal in quality to amperometric electrodes.
We are using the Ag|AgCl, Pt and working electrodes like Glassy Carbon (3 mm dia), and Gold electrodes which are products of BASi supplied by Techscience.
We were working on these electrodes from the last 4 years and were able to produce very good results in CV, EIS and DPV experiments.
The corresponding Service Engineer is G. Balasubramanian Sir,