CS>ppm meters From: Terry Chamberlin Date: Sat, 26 Mar 2005 08:28:00 http://escribe.com/health/thesilverlist/m78919.html
> My question is: Do these ppm meters measure both colloidal > (particulate) and also ionic silver content? > I had a sample of some silver tested once by Bob Berger, who > reported 12.3 ppm. I had the same CS tested by a local laboratory > that is paid to do industrial testing, and they found it to be 5 > ppm. I asked Bob about this, and he said they only tested > particulate, not ionic. > Any thoughts on this? Hi Terry, Conductance meters measure the ion content but ignore the oxides since they have no charge. I did a study that correlated the work by Ivan Anderson, Frank Key, and Trem Williams, and found the relation between conductance and ionic ppm is 1uS = 1 ppm. One problem is the conductance reading cannot tell you what kind of ions are involved. Any contamination from spray drops of cleaning materials, such as bleach, vinegar, ammonia, etc, can travel an amazing distance and enter your equipment without your knowledge. To solve this problem, I suggest using the Faraday equation to determine how much silver was liberated during the brew, the Hanna PWT to confirm most of it went into making ions, then a salt test using pickling or canning salt to confirm the Hanna reading. A TDS meter is not well suited for testing cs. The scale goes to 999ppm, which means a +/-2% error could be +/-20ppm. It also has a minimum reading of 1ppm, so it's not useful for checking the quality of the dw. The TDS meter converts the conductance reading in uS to a reading in ppm. It is intended to determine the content of many different kinds of water, such as drinking water, sewage effluent, sea water, etc. These have different kinds of ions, so the meter is calibrated using a calibration solution tailored for the intended use. It may give entirely different readings with silver and hydroxyl ions. You can see the problem this causes when someone reports a TDS reading from an unknown unit where you have no idea what the calibration factor is for that unit. The particulate content is of no interest. The oxides are inert and have no biological activity. You can see this in Steve Quinto's report on Mesosilver: http://tinyurl.com/3qb4v Additional supporting data are at http://tinyurl.com/47ujf http://tinyurl.com/3mmq2 Frank Key has posted objections to this, and I am in the process of preparing a response. Regards, Mike Monett -- The Silver List is a moderated forum for discussing Colloidal Silver. Instructions for unsubscribing are posted at: http://silverlist.org To post, address your message to: [email protected] Silver List archive: http://escribe.com/health/thesilverlist/index.html Address Off-Topic messages to: [email protected] OT Archive: http://escribe.com/health/silverofftopiclist/index.html List maintainer: Mike Devour <[email protected]>
