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cobalt leaching at cone 10

updated thu 5 mar 98


Numo Jaeger and Michael Miller on wed 4 mar 98

Hi Craig,

Thanks for the reply! Do you know of a source book or article where I can
read further on leachability levels of cobalt (and other metals) and what
is harmful?

I was thinking and curious about healthy amounts of trace metals and how
this relates to clay pots and the leachability issues.

For instance: cooking in cast iron ware is supposed to be healthy for you
because of the small amounts that the pot or cookware releases.

What is the threshhold level of cobalt for humans? What amount is ok if any?

Numo Jaeger
Studio One Art Center
365 45th Street
Oakland, CA 94606