"Ole Bob" and Ivan, Thanks Bob for the information you have provided in this message and thanks Ivan for the follow up message on the Tyndall.
I liked your item # 2 Bob about the IR light and size of particles. I did produce CS with barely no Tyndall effect detected with my laser pointer and I was wondering if the CS was good or not (even though the voltage plot was ok - I have a current limiting set up). I was under the impression that we must be able to detect very low Tyndall effect with a laser pointer to ensure that we do have CS. But, I presume now that we can have good CS without being able to detect Tyndall effect with a laser pointer as mentionned in Ivan's message. Pls correct me if I am wrong. Thanks again for all this information. Gaston ================================================= ----- Original Message ----- From: "Robert L. Berger" <[email protected]> To: "silver-list" <[email protected]> Sent: Tuesday, August 08, 2000 5:10 AM Subject: CS>Standardization > Hi Ya'all, > > There are two general types of CS generators; constant voltage and > constant current. > > 1.) with either method constant stirring reduces the agglomeration of > silver ions, and should result in a weaker T.E. for a given PPM. (first > step) > > In any manufacturing operation the product made will have a distribution > for a particular parameter. The distribution curve is generally a bell > shaped curve. If the process is under control the center of the bell > will be the desired parameter. The + or - > three sigma limit is set by the equipment used. Poor equipment will have > a very wide range and top notch equipment will have a narrow range. We > never can realize the ideal of a single point. > > 2.) With the average IR laser the wavelength of the IR light is about > 680 nanometers. If all CS particles were smaller than 680 nm then there > would be no T.E. Since there is a distribution of particles in the CS > then the brightness of the T.E. is a direct indication of particle > sizes. Which could be correlated to bioavailability. > > 3.) The second step to standardization would be to meter the current in > a constant voltage system or the cell voltage in a constant current > system. In a constant voltage system the current will increase at an > increasing rate up to a point. Then the rate of increase will stop and > actually reverse. When the increasing rate starts to slow down (can be > seem if data is plotted during the brew cycle) agglomeration has set in > and the T.E. will start to get brighter. > > 4.) Step #3 is to plot the current or voltage with time to observe what > is happening. As in #2 above. > > 5.) The initial cell current in a constant voltage system is your best > measure of the water quality. If one will data plot then a history can > be obtained for your process so as the water quality varies you will > know when to shut off the system. > > 6.) If one measures with a Hanna type meter it will be found that the > conductivity will change with time, so note the reading after brew and > 24, and 48 hours later for data plotting. Then if one has an AA or > spectrophotometer reading made for a stable product a bench mark has > been reached to the standardization of your individual system, and then > we can talk about relative ppm of CS with some degree of accuracy. > > This might seem to be a lot of work, but stop and consider the value of > being able to talk intelligently about the results that one can get with > ones CS. > > The work by Stephen Quinto shows a remarkable difference in "killing > power" between 9 ppm (fair) and 12 ppm (very good) > for Staph and Ecoli1 and Ecoli2. > > So having a reasonable knowledge of your product may mean the success or > failure in what you are trying to accomplish. > > Sorry for the harangue. > > "Ole Bob" > > > > > > -- > 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]> >
