John Baymore on tue 7 oct 97
------------------
........snip.......
=3EWITHOUT going thru all the ins =26 outs of Barium for the umpteenth
=3Etime - and acknowledging upfront that rellease is affected by
=3Ethe firing =26 cmposition, etc. of the whole glaze.......
=3E
=3EDoes anyone have info on approximately how much Ba can be used
=3Ein a specific base glaze before the Ba starts to release at
=3Ea toxic level? (Or any level?)
=3E
=3EDoes anyone know of specific glazes which may APPEAR to have
=3E=22too much=22 Ba but which in fact tested out food safe?
.....clip.....
Karen,
There has been a LOT of discussion on this issue that should be in the
archives. You'll find lots of information and opinions there. You and
your friend will have to sort it out as to value. Please remember that
most of the posts you will find in the archives (including mine) come from
potters, ceramic arts educators, and ceramic engineers (some of whom may be
any and all combinations of those).
What I think is an important thought on this whole subject.........
If you are sicker than you can treat yourself, you go to a doctor. If your
plumbing is plugged more than you know how to fix, you get a plumber. If
your car engine is screwed up beyond your skills, you call a mechanic. If
you want to build a build a building that is beyond your carpentry skills,
you employ a carpenter and maybe an architect.
Toxicology and medicine are complicated, specialized fields..... and some
of the research is brand new. Some things have never even been looked at.
I am afraid that some of your interests here have not been studied very
much.... or at least not enough to be definitive.
If you are seriously looking for information on toxicology in the arts
fields, you find a specialist in that area. There are two that have earned
quite a bit of prominence in this field since the early 1980's: Monona
Rossol, Industrial Hygenist (who happens to have an MFA in ceramics also)
and Dr. Michael McCann.
Monona Rossol frequents CLAYART on occasion (so might respond) or can be
reached via e-mail at 75054.2542=40Compuserve.com (For those of you getting
garbage characters.... that is the standard AT sign between the .2542 and
the Compuserve.com). She can be reached at Art, Craft, and Theatre Safety
181 Thompson St. Number 23 NY NY 10012 212-777-0062. Also via
http://www.caseweb.com/acts/
Dr. McCann is not on the list, and I don't know if he still has an e-mail
address (he did at one time). He can be reached at the Center for Safety
in the Arts at 2124 Broadway, Box 310 NY NY 10023
Monona Rossol has a couple of books available on the subjet of toxicology
(=22Artists' Complete Health and Safety Guide=22 and =22Keeping Claywork =
Safe
and Legal=22) plus publishes a newsletter =22ACTS Facts=22. =22Safe and =
Leagal=22 is
available from NCECA.
Dr. McCann has published a number of books on toxicology in the arts, the
most basic and essential for any artists library being =22Artist Beware=22.
Hope this info is of help.
Best,
.....................john
John Baymore
River Bend Pottery
22 Riverbend Way
Wilton, NH 03086 USA
603-654-2752
JBaymore=40Compuserve.com
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