Trem <t...@silvergen.com> wrote: > >A few facts. > >I made a gallon batch several days ago with an SG7. It measured 47uS. > >Was still climbing when shut off. > >I made some batches in 2001 when designing the SG7. They were measured >at 45+PPM. They were all clear and colorless. > >I check them every year or so. Checked again after making the above >batch. Still 45uS Checked Tyndall with lights OFF. No Tyndall but a >few sparkles probably moving around by Brownian. > >All batches use VIGOROUS stirring during production. I use 2 milliamps >per square inch of anode area. > >Trem
Trem, at 2mA per square inch and flat sheets, you are well above the Nernst Threshold and should be making plenty of silver hydroxide, AgOH. The fact you have little or no Tyndall indicates a potentially serious problem with contamination. It could come from sulfur on the electrodes or plasticizer leaching from the pump mechanism and hoses. Or other sources of contamination resulting from the fact your system is completely open to the environment. The fact that you do not show a drop in conductance after the brew is finished also indicates that the brew is contaminated. The Hanna and COM-100 PWT cannot tell the difference between silver ions and any other source of contamination. So the readings mean nothing until they have been independently verified. One way to verify the performance of the system is to monitor the cell current during the brew and apply the Faraday equation. This tells the amount of silver that was liberated. Then compare that with the Hanna or COM-100 readings. If you measure a higher value with the PWT that predicted by the Faraday calculation, then obviously there is a contamination problem. Another way to confirm the silver ion content is with the Salt Test. This is completely immune to contamination. The resulting dispersion can be compared with a known silver ion concentration to confirm the value. Have you ever performed either of these tests? The highest concentration that Frank measures in his product reports is around 20 uS, except the American Biotech Labs that measures 30 uS. This product is made with an open high voltage arc that creates nitrogen oxides. Frank observes the oxides dissolve in the dw and will form nitric acid. This potentially dissolves any silver compounds and results in a high silver ion content. However, except for this one product, all the rest are around 20uS or below. If your method produced such high silver ion concentrations, why does no other vendor use it? I believe Frank measured the output of your system at 14uS. This contrasts with the 20uS that you claim. Have you ever resolved this discrepancy? If you are truly obtaining 45+ uS with your system, please send a sample to Frank and have him measure it. Thanks, Mike Monett SilverCell -- The Silver List is a moderated forum for discussing Colloidal Silver. Rules and Instructions: http://www.silverlist.org Unsubscribe: <mailto:silver-list-requ...@eskimo.com?subject=unsubscribe> Archives: http://www.mail-archive.com/silver-list@eskimo.com/maillist.html Off-Topic discussions: <mailto:silver-off-topic-l...@eskimo.com> List Owner: Mike Devour <mailto:mdev...@eskimo.com>
