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ceramic water filters:video clip link

updated fri 18 sep 09


Stephani Stephenson on wed 16 sep 09

I know reaid HArvey and others have been working with ceramic water filte=
rs for years.
Tracy Hawkins is putting the idea to good use. interesting clip.
I wonder how the silver layer is put in.


ivor & olive lewis on thu 17 sep 09

The bisque fired filter element is soaked in a solution of Silver nitrate
and then refired at a relatively low temperature.
Silver nitrate decomposes before the temperature reaches 500 deg C leaving
behind a micronised deposit of metallic Silver throughout the clay fabric.
Silver and its compounds have bactericidal properties.
Best regards,
Ivor Lewis,
South Australia