How carbon (or Gold) (or platinum) Screen Printed Electrodes (SPE) are cleaned?

• The most often and convenient method to clean SPE is using an H₂O₂ solution and performing multiple Cyclic Voltammetry cycles at a low sweep speed.
• Carbon-based SPE electrodes are washed with ethanol followed by soaking it in 0.01 M hydrochloric acid solution.
• For cleaning Gold and platinum-based SPE electrodes, the negative sweeping method is preferred as it increases the roughness of the electrode surface.

[Reference: 10.3390/pr10040723]