url: http://escribe.com/health/thesilverlist/m62818.html Re: CS> Trem, Question about uS/PPM conversion From: Robert Berger Date: Sun, 28 Sep 2003 13:54:59
> Hi Mike, > You are chasing a wil-o- the- wisp if you think that you can ever > tie ppm to uS !! > The whole process is plagued with CO2 and NO3 from dissolved > gases. > Just check the pH of various runs. Not often does one get a pH of > 6+ . I have pH's in the 8 range as well as the 3 to 4 range. [...] > "Ole Bob" Hi Robert, Frank Key measured the uS and ppm on some commercial products and posted the results at http://www.silver-colloids.com/Reports/reports.html I selected five that seem to correlate well. Here is the list: Product Name Conductivity Ionic PPM Ratio ~~~~~~~~~~~~ ~~~~~~~~~~~~ ~~~~~~~~~ ~~~~~ Silver Lightning 3.3 uS/cm 3.71 ppm 0.889 Mesosilver 3.9 uS/cm 3.9 ppm 1.0 Sovereign Silver 9.7 uS/cm 9.22 ppm 1.052 ASAP Solution 11.4 uS/cm 10.65 ppm 1.070 ASAP Solution 20.1 uS/cm 19.59 ppm 1.026 The average is 0.889 + 1.0 + 1.052 + 1.070 + 1.026 = 5.037 / 5 = 1.0074 It looks like the unity conversion factor is valid over quite a wide range of ppm, if you believe Frank's measurements. Many people do, and I have no reason to believe otherwise. These products are made with different processes, so it looks like the conversion factor is not affected by absorbed gas or the cs process. I discarded one or two products that were clearly far off the curve. I don't know what they did to the cs, but I now consider if the uS and ppm do not correlate well, there is something wrong with the process, or they added something to it, or perhaps dw is poor quality. Note I count only the ionic portion. My experience says the particles have little effect. Best Regards, Mike Monett -- 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>