You got it.  But I switch them often enough to have a perfectly 'clean' 
solution on completion of production which can be stored and used 'as is' 
without the necessity for decanting or filtering which I have read about 
everywhere that some producers seem to have a need to do.

 

N.
 
> Date: Sun, 21 Jun 2009 15:23:48 -0500
> Subject: Re: CS>polarity switching circuit?????????????????
> From: [email protected]
> To: [email protected]
> 
> 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
> 
> On Sun, Jun 21, 2009 at 6:17 AM, Neville Munn<[email protected]> wrote:
> > Yeah, I can tell you what I do...it depends on the quantity of water when I
> > switch mine over.  If I'm producing 1 litre or more I use a magnetic stirrer
> > and switch over every 30 minutes, for a 300ml glass I only switch once at
> > the 30 minute mark and stop production 30 minutes after that (1 hour).  Over
> > 300ml and up to 1 litre I may do it a second time at 15 minute intervals
> > (depending on the mood I'm in at the time if I'm not using the stirrer) if I
> > do use the stirrer I still do it at 30 minute intervals.  I clean the
> > electrodes each time I switch over also.
> >
> > N.
> > ________________________________
> > Date: Sat, 20 Jun 2009 10:51:01 -0700
> > From: [email protected]
> > To: [email protected]
> > Subject: CS>polarity switching circuit?????????????????
> >
> > Hello,
> >
> > I built a polarity switching circuit. Does any body know how often should
> > the circuit switch? And why? Thank you in advance. John.
> >
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