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clay toxicity and monona's response

updated mon 31 mar 97


Martin Butt on wed 19 mar 97

Kris Griffith wrote:
>I am posting this for a friend who runs a clay manufacturing business...He
is interested in finding out how to have his clay body and or formulas tested
for toxicity.<

Monona; I am supprised at the tone of your response to this post. I would
think that you would encourage this guy to have his formulas tested, as well
as answering his question as how to go about it! Instead, I suspect he
found your reply to be something less than helpfull: "he has a big
problem...I don't like the standard...the labeling standard/law sucks...etc"

Anyway; Kris, pass this information along. Effictive November 1990 the art
material labeling law known as ASTM D-4236 requires manufacturers to evaluate
their products for their ability to cause chronic illness and to place labels
on those that do. Manufacturers must have their products evaluated by a
toxicologist under the provisions of ASTM D-4236 to verify that no chronic
hazard label is required. If a chronic hazard label is called for in this
toxicological review, a label with health and use information is needed.

This toxicoligy review can be acomplished either by submitting formulas to a
qualified toxicoligist, or by joining a certifying organization (bring a big

1. The Art and Craft Materials Institute, Inc.
715 Boylston Street
Boston, Massachusetts 02116

2. Ceramic Manufacturers Association
PO Box 2188
Zanesville, OH 43702

If you need the name of an independant toxicoligist email me privately and
I'll send you one.

Best Wishes,

Martin Butt
Coyote Clay School Albuquerque, New Mexico