For the record, Ole' Bob analyzed a sample of my HVAC cone method CS. The ppm (about 12) was within 1 ppm of my PWT reading on the batch. It also had 1.5ppm NO3 in it. I'm not worrying about the small amount of NO3. I was glad to know that with my method of CS brewing, the PWT is close enough for me.
Vince -----Original Message----- From: Mike Monett [mailto:[email protected]] Sent: Sunday, September 28, 2003 4:07 PM To: [email protected] Subject: Re: CS> Trem, Question about uS/PPM conversion 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. -- 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: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
