[email protected] wrote: > In a message dated 6/22/00 8:09:51 AM EST, [email protected] writes: > > << Roger, > > I can't find the reference just now, but I believe rather than having a > DC across the electrodes causing the electrophoresis of the particles in > the solution, an AC current of fairly high frequency is used, which > keeps these particle pretty much jiggling in place and avoids the > plating out which would otherwise occur. If you leave such a meter > sitting in the solution some plating out is inevitable, which may > distort the reading. > > Ivan: I believe your comments were intended to explain why using a > conductivity meter for measuring CS concentration would not produce > inaccuracies by having silver plate out as long as the CS were removed after > a reading and the cup flushed with DW. However, part of your commentary > sounds very much like my HVAC setup to make CS, > > "...an AC current of fairly high frequency is used, which > keeps these particle pretty much jiggling in place and avoids the > plating out which would otherwise occur." > > So, having a voltage/frequency ratio close to one and not 150 as Marshall has > suggested seems acceptable as long as the frequency is high enough. Perhaps > even 60 Hz should be high enough. If 60 Hz. is OK, wouldn't ~12000 Hz. do the > job -- at ANY voltage? Any thoughts?
I don't believe so. I ran a test with 60 htz and 30 volts for a week and got virtually no CS produced. Apparently it is necessary to have either sufficient voltage or time for the ions to move away from the electrode far enough to not get sucked back to it on the next half cycle. A higher frequency would preform worse I would suspect. Marshall -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
