----- Original Message ----- From: <[email protected]>
> Hi Ivan and All; Hi Bob, > I think it is finally time to answer a few questions. In a previous post > I alluded to making CS at 24 ppm in 4 1/2 hours. Ivan countered by > saying that his 9 vdc to 27 vdc constant current gen would make 20 ppm > in 2 1/2 hours. I don't think that he stated the brewing parameters. Well, I was constrasting the posts where you talk about 48 hr runs. I notice you now run for 4 hrs. I have posted my brewing parameters many times : 1 cup (200mls, 7 - 8 oz) distilled water, with electrodes in the following arrangement, 2 x 2mm silver wire (14swg), wetted depth 45mm (1 3/4"), 45mm apart. I used a sterilite 1 cup, soft clear lidded plastic container with the electrodes pushed through the lid and parallel. The container dimensions are, 85mm (3 1/4") diameter by 65mm (2 1/2") deep. > So I finally got out an HP Precision Constant Current Source model > #6181C, and set the voltage limit to 27 volts and the current limit to > 1.0 ma. > > Using my best DW with 1.8 microSeimens, and the following cell > conditions; 16 0z Dw, #14 gauge round electrodes, spaced 1" with 3 12/" > in the DW, and running for 2 1/2 hours. It took 45 minutes for the > current to come up to 1 ma. and remained constant for the rest of the > time. The cell voltage dropped to 11.1 volts at the end of the run. The > Rb0 (bulk resistance) of the CS t the end of the run was 58 kohms, and > the ppm was 6.5. There was heavy treeing and sludge on the cell > bottom.. The T.E. was heavy with sparkles. The electrode configuration is different to mine (see above) and I limit the current to 0.6 mA. I have no treeing or fallout and no sparklies. > When compared to the EZCS gen product, the 24 to 27 ppm Cs has a much > narrower T.E. and no sparklies. During brewing there is no treeing, > sludge, and no electrode wiping. The Tyndal beam is very light, becoming more pronounced over the next 1 or 2 days. > So I made another run using DW with 6.6 microSeimens and the cell > current hit one ma. in about 3 seconds. The final voltage was 6.7 volts. > The Rb0 for this batch was 33 kohms, and the ppm was 11.0. It is > interesting that there was no treeing and almost no sludge. Also this > batch had a narrower T.E. beam with less sparklies than the so called > better water. > > Since the ISE probe and the spectrophotometer measure silver ions, the > question was raised by Ivan as to how much of my CS is ionic and how > much is metal? He didn't say his ratio or how he measured it. For me it > would require a rather hazardous nitric acid digestion, which I don't > think anyone except Marshal Dudley uses. The Ion Selective Electrode measures silver ions only. I believe you use an Atomic Absorption Spectrophotometer (correct me if I am wrong), which I believe measures TOTAL silver content. It turns metallic silver (if present) into ions by vapourising it in a flame. So far, the CS I have generated contains little or no metallic silver, as the ISE readings and AA readings I have comissioned are the same, within the margin of error. > Next week I should have the TEM results for my 10 ppm and 35 ppm made > with out stirring. I have observed that stirring makes a CS with a > narrow T.E. beam and almost no sparklies. So off goes another sample > made by stirring along with the requisite $100.00 just to get an answer. I will be most interested in the results. (expensive isn't it) > Ian has extolled the virtues of his machine and no price. I have > mentioned that the basic EZCS is $60.00 plus shipping. When stirring is > added there will another $20.00 for all of the machine required. I don't like the idea of advertising on list, but for what it is worth (and as we now have a vendors file) the price is $55.00 airmailed, and includes the generating container. I must say that your price seems quite resonable also. > The reason that I have not pushed sales or advertised is that I an > retired and don't need the hassle. However one of my customers wants to > have his son make them, and I will supply all of the drawing and data > for no charge, as I will anyone else that has the machine tools to build > it. > > Ian, if you want me to rerun this with different cell parameters, I > will. Either I am doing something different or the measuring techniques > are wacky. Well Bob, thats up to you, I think you have all the parameters now. > "Ole Bob" Regards - Ivan -- 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] List maintainer: Mike Devour <[email protected]>
