Ole Bob, Thanks for the reassurance, and I do feel a little better about people using the silver chloride candles. But the calculation I did indicates a little under 1.0 ppm per 100 mls. of cold drinking water, and not per gallon. I'm going to take some of the filtrate to local labs, testing for presence of silver, and see what they come up with.
Also, I'm seeing that Microdyn saturated candles probably have a lot more silver oxide in the filtered water than is the case with silver chloride for filtrate of the new candles. The silver chloride solubility coef. is 0.89 x 10-5, versus, for silver oxide (of one form or the other ?) 0.0013. I need to check my numbers again, but even with this much lower solubility coef., it appears the silver oxide in filtrate was not detectable. I think that what has spooked me is that the coefficients actually permit the calculation, fixing on some tiny number, even without the lab tests. Reid Ole Bob wrote: Personally, I wouldn't hesitate to use that filter for a single second. 1 PPM at a gallon a day drinking water ain't diddly squat especially diluted into what..6-8 quarts of body fluids? ..and there has to be some sort of elimination rate even for AgCl. How much AgCl actually is absorbed into the blood stream from the digestive tract...all of it, or very little of it? [I dunno] But in this case for this purpose, the digestive tract is where it all counts. Cooking water is boiled. Remove disk and go with getting the crud out to boil up clear but dangerous water and save the disk for when it's needed for drinking water. Plus, with some AgCl floating around in the tummy with your meals, it might just get anything that sneaks by even at 1/10 the killing power. That might come in handy where there is no refrigeration. Ode At 10:01 AM 11/24/2003 -0500, you wrote: >Reid Harvey wrote: > >> Ode, >> Thanks for all this info. I woke up struggling with the idea of >> informing people on the methods of saturating AgCl ceramic water >> purifiers. It's incredibly simple to take a common, ceramic candle >> filter, saturate with silver nitrate, then run water through it. Then, >> with the silver chloride disinfectant within the ceramic one ends up >> with a *highly effective,* and very inexpensive disinfectant against >> virtually all of the fecal coliform indicators. The *problem* is that >> you also get something like 1.0 ppm of silver chloride in the water. >> >> Of course, we're still working on silver methods that don't add anything >> to the water. But in not reporting the AgCl ceramic purifier wouldn't >> our priorities be askew? Each and every day, somewhere in the world, >> about 4000 people die of the dehydration caused by dysentery, the result >> of bacteria contaminated water. It seems a little crazy to deny them so >> simple an idea as a silver chloride water filter, just because of a >> remote risk of argyria. >> >> Can someone suggest whether or not I should tell people about silver >> chloride water filters? I'm presently very indecisive. > >Are those who use the filter dark or light skinned? I don't believe dark >skinned people can acquire argyria as easily as light skinned, since light >is necessary and I don't believe it penetrates sufficiently deep in the >skin. Even so, I am not sure that 1 ppm of silver chloride would cause it >anyway even in light skinned people.. From what I have read, the >concentrations of silver must be far more than that. > >I believe if that low a concentration of silver chloride could cause >argyria, we would all be getting it, since it appears that much of the ionic >portion of what we all drink becomes silver chloride upon contact with >stomach acid. > >If I did tell them I would not call it argyria, they would not know what >that was. I would only say that extended use could possibly cause darkening >of the skin for some people and let it go at that. > >Marshall -- The silver-list is a moderated forum for discussion of colloidal silver. Instructions for unsubscribing may be found at: http://silverlist.org To post, address your message to: silver-list@eskimo.com Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <mdev...@eskimo.com>
