Hi Mike, I guess you didn't understand or I wasn't clear. I always have floaters in the container after making a batch with the SG7. They disappear when I drain the CS into another container. I assume the draining causes surface tension to let them go into the mix from the dropping into the receiver.
I make one gallon at a time.I cannot tell you brew time. I never keep track. I would rather listen to paint dry or my hair grow. It averages 2 gallons/hour at 5 PPM. 1 gallon/hour at 10 PPM and 1/2 gallon/hour at 20 PPM. Sometimes faster...sometimes slower. Remember, it's current limited and has auto shutoff. I always make it to full strength because I calibrate each unit before shipping by making a batch to assure that it will produce what I say it will. So, we wind up with a surfeit of high strength CS. I use an electronic test jig for calibrating the SG6 units. Current density is not high since one the anode is always between two cathodes ant the other anode is adjacent one cathode. And then it reveres and so on. That gives about 24 square inches of anode and at 30 milliamps the density is about 1.25 ma./square inch. Not high at all. Starting at 75 volts just gets the unit up to speed quickly since the electrodes are about 1/2 inch apart. The current gradient in the water is pretty strong so that's why vigorous stirring is required. Otherwise the unit would shut off prematurely. The voltage begins to drop as soon as the target current is reached. Shut off voltage can be as low as 7-8 volts....depending on the final strength desired. Yes, I use discrete components for the current regulator. My design. The only integrated chip is the comparator. All other components are discrete. Best regards, Trem ----- Original Message ----- From: "Mike Monett" <[email protected]> To: <[email protected]> Sent: Monday, October 18, 2004 1:52 PM Subject: Re: CS>Floaters in CS > Hi Trem, > > Yes, thank you very much. Your parameters are very interesting and I > would like to study them more carefully. Can your give the exact > volume of dw and the brew times? > > You probably won't see any floaters with the vigorous stirring - they > are very fragile and would be blown away. Also, reversing polarity > would likely prevent any buildup. > > With a starting voltage of 75 volts, you must be running fairly high > current density. Also, this would require a discrete current source > since no integrated current regulator I know of will handle more than > about 36 volts between input and output. Is this true? > > The high voltage seems to indicate you are running at higher current > density than most cs generators. The Nernst diffusion layer should be > quite dense, and there should be a lot of combination of Ag+ and OH- > ions at both electrodes. > > This produces the neutral silver oxide particles that agglomerate and > cause yellowing, as well as a strong Tyndall. Some of the reactions > are: > > Ag+ + OH- --> AgOH > > AgOH + AgOH --> 2AgO + H2O > > The Nernst diffusion layer must concentrate the ions to quite high > density to allow this reaction. I have allowed a glass containing 1 > inch of 20 ppm cs to evaporate down to 1/8 inch (took weeks!), and it > remained clear with no hint of color. > > The final ppm must have been at least 20 * 8 = 160ppm. The salt test > showed enormous flakes of silver chloride that were visible without a > microscope. So it takes even higher concentration than this to convert > significant numbers of ions to the various silver oxides. > > With the three nines process, the exponential current rise produces > very density at the end of the brew which limits the ppm to 10 to 12 > or so. Using lower current density allows higher ppm, perhaps up to > 22ppm before significant yellowing starts. > > So the vigorous stirring in your system may disrupt the Nernst layer > enough to reduce the conversion to oxides, and you get no yellowing. > This is very significant! > > Mike Monett > > > -- > The Silver List is a moderated forum for discussing Colloidal Silver. > > Instructions for unsubscribing are posted at: http://silverlist.org > > To post, address your message to: [email protected] > Silver List archive: http://escribe.com/health/thesilverlist/index.html > > Address Off-Topic messages to: [email protected] > OT Archive: http://escribe.com/health/silverofftopiclist/index.html > > List maintainer: Mike Devour <[email protected]> >
