Hey, I think it is preferred to use aqueous solutions, since it is more flexible, I haven´t tried the other way around, since more specific combinations is needed.
All i know about this topic in organic polar solvents is that we use NBu4PF6, for its inter properties, and I am specialized in proteins sorry ;) So I would rather start at one of these points, then to purge another composition of solvent. Keep pH and temperature exactly stable, so the O2 content is always the same. Use low scan rate ^^
Look at the result screen, It´s not that good! The rest of the Images are cleaned or produced in steps where they always look decent ;)
But if you try a design I got experience from i could point to some problems of reproducability in more detail then the text!
Thanks for reading!