CS Friends and Lovers, Read 'em and weep, following. Interestingly, the inventor of silver saturated filters is the Katadyn Co., of Switzerland. (The WHO is also headquartered in Switzerland). Katadyn says that the silver in their filters is NOT what kills the pathogens. Their explanation as to just what does kill the pathogens is very complex. On the other hand, Katadyn's 1930 patent application presents data that proves that it is the silver that DOES kill the bacteria. If we are all confused I wonder why? Reid
>From the World Health Organization, Guidelines for Drinking Water Quality, section 6.3.4, paragraph 4: "The growth of bacteria within activated carbon point-of-use water filters has been well documented. Some manufacturers of carbon filters have attempted to avoid this problem by incorporating silver, as a bacteriostatic agent, in the filters. However, all of the published reports on this topic have convincingly demonstrated that this practice has limited effect. It is believed that the presence of silver within these filters selectively permits the growth of silver-tolerant bacteria. For this reason, it is imperitive that these devices be used only with drinking-water known to be microbiologically safe and that devices be well flushed prior to each use. Silver is occasionally used to disinfect drinking-water on board ships. However, because long contact times or high concentrations are essential, the use of silver for disinfection is not considered practical for point-of-use applications." -- 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]>
