Ode:

The Rawleigh company (GoldenPride) has sold a ceramic water filter purifier
with silver impregnated ceramic filter with a carbon core for decades.

Every month or so, you screw the cover off and brush away the accumulated
crud.  It even removes most of the carcinogenic clorine.

Ed
----- Original Message ----- 
From: "Ode Coyote" <[email protected]>
To: <[email protected]>
Sent: Tuesday, December 09, 2003 8:26 AM
Subject: [personal] Re: CS>AgCl in water purifiers & question


>   Reid
>
>  It looks like the 'establishment' is doing the silver impregnated ceramic
> thing under the trademark AGION.
>  Look up their patents?
>  Also look up NSA water filters.. They've been doing it since the mid 80s.
> Ode
>
> At 05:47 AM 12/9/2003 +0530, you wrote:
> >Everybody,
> >I've been meaning to mention that I had a set of tests run, eight silver
> >chloride, ceramic purifiers, for the presence of silver in the filtered
> >water.  Checking on solubility, the coef. for silver chloride is
> >0.000089 (I think), and with some calculation it appeared possible that
> >just under 1.0 ppm of AgCl is in solution in 100 ml. of water.  But for
> >the tests, only two of the eight candles indicated silver in the
> >filtrate, and those just barely detectable.  If I recall correctly the
> >lowest detectable silver is 0.01 mgs. and what we showed for the two
> >candles out of eight was 0.02.  We should test again over time, liter by
> >liter.
> >
> >I begin to understand that solubility concerns a maximum amount of a
> >substance that can be present in solution, very much the fledgling
> >here.  So I have a couple of questions:  How would the solubility work?
> >Considering the AgCl is probably in individual molecules or small groups
> >of molecules,  do these individually disolve within the on coming
> >water?  And wouldn't it be that there are two or more solutions?  One is
> >in the container of filtered water and the other one(s) are inside the
> >ceramic?  In my curiosity (and ignorance?) I imagine that we could
> >measure the amount of AgCl within an individual pore of the ceramic, and
> >this should relate to disolved AgCl within the filtrate.
> >
> >But how is it the filtered water could contain about 1.0 ppm of AgCl,
> >while the tests indicate this is at undetectable levels? Am I making a
> >short matter long?
> >Reid
> >
> >
> >
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