This is interesting as this suggest that while there is a limit to how much AgOH can dissolve, there may be a totally different (if not no theoretical limit) for how much Ag+ and OH- can be in solution (i.e. not as a result of dissolving AgOH). Can that physically/chemically make sense?
Perhaps it is as Mike suggests in that whatever AgOH is formed is done so immediately in the so called nernst diffusion layer. This would imply that the drop in conductance after a batch finishes is caused by something entirely different than AgOH forming. What could be causing the drop then? And why is it less pronounced in the higher density EIS? (perhaps some of the conductance drop is not seen in the higher PPM EIS, as it is actually obscured by the still overall increasing conductance since the higher PPM EIS is being processed for a much longer time?) This could also explain a mechanism of particle formation as AgOH clumps right at the site of the electrode? just talking out of something David