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
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