I use the polarity switching too, but I still have to clean the electrodes off as they go blackish colour, but no lumps or anything. Dee
-------Original Message------- From: Dan Nave Date: 21/06/2009 21:24:03 To: [email protected] Subject: Re: CS>polarity switching circuit????????????????? If you are switching polarity, why would you need to clean the electrodes? Oh, I see, you don't switch often enough to keep them clean... Dan
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