Jack,
The silver in the filter appears to be an oxide, the result of drying,
also a bit of the metal is present.  There seems to be a lot about
what's going on that isn't clearly understood, as is the case in
ingesting CS.  My understanding is that there are several theories about
what goes on in the oliogodynamic action:  1.  It takes 20 minutes of
repeated contact for the harmful bacteria to die (some say 'become
inactivated').  2.  The bacteria die 20 minutes after making contact.
3.  Same as what's going on in #s 1. and 2., however the time period is
6 minutes.

I've had good luck with filters that allowed for only about 10 minutes
contact time, bacteria withing the medium, but now I over-engineer.  I
design the filters to have a wall thickness such that the volume of the
medium is equal to the volume of filtrate over a 20 minute period.  The
idea is that the bacteria will be D.O.A. in the lower container.
Reid

Jack Dayton wrote:
on more than one instance there have been
posts to the list  by members that have
conducted invitro tests of the time required
for CS to kill any of a variety ( probably not 650)
of germs, and, if memory serves, some varieties
took MINUTES to get dead -- how can the silver
saturated  ceramic material produce instant results?

It is not my intention  to be contentious, but I have
had a near terminal case of curiosity since childhood.

Jack




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