Ivan Anderson wrote: > ----- Original Message ----- > From: <[email protected]> > To: <[email protected]> > Sent: Friday, 23 June 2000 01:24 > Subject: Re: CS>PWT Calibration > > > In a message dated 6/22/00 8:09:51 AM EST, [email protected] writes: > > > > 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? > > > > Roger > > I'm not sure that the two can be compared Roger. I imagine that having > too high a frequency across submerged electrodes would impede the > dissolution of the silver, as the ions would be sucked back onto it in > short order, if they managed to escape at all (pure speculation). > > In your situation, plasma arc, I think the opposite is true. The > frequency would serve to moderate what could otherwise be uncontrolled > melting of the electrode and inferior outcomes. I have welded stainless > steel for years using the gas tungsten arc method, and my present welder > has a pulse feature adjustable to 10KHz (I think) and this is used to > control the amount of heat entering the work and the size of the weld > pool.
I agree. For plasma arc, what I have been saying is not applicable. For this you need not reinvent the wheel. Check out a copy of "The Formation of Colloids" by The SVEDBERG, D. Van Nostrand Company, 1921, pages 19 through 51. It covers temperature, voltage, current, frequency, and the effects of using different gases and liquids when using an arc for producing colloidal silver. It even discusses the sputtering of silver onto the glass if the arc gets too close to the wall. There are several pages of discussion as to the effect of DC, vs 50 htz. vs.hgh frequency activation. 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]>
