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hydrometer, and chemicals

updated wed 1 jan 03

 

Snail Scott on mon 30 dec 02


At 09:25 AM 12/30/02 -0500, you wrote:

>A few years ago I read an article in the local paper about a Dartmouth
>University professor. She was doing some research on dimethylmercury...
>10 months later she died from mercury poisoning...



Hang on, there! There is NO WAY to extrapolate from the
hazards of dimethyl mercury (or any other chemical) and
determine the real hazards of some unrelated substance!
There's NO RELATIONSHIP!!! It's like saying, "gee, some
mushrooms are poisonous, so lima beans might be lethal!"

The only information that's of any value is information
related to the ACTUAL chemical you are using. Edouard
Bastarache and others have made accurate, detailed, and
RELEVANT health hazard information available to all of
us. Read the info, consider the facts, and decide for
yourself, but please NO MORE IRRELEVANT SCARE STORIES!
There are plenty of real hazards in our studios; let's
not bury the necessary, accurate information in a pile
of blind speculation and fear-mongering.


-Snail

RPeckham@COOKSONELECTRONICS.COM on mon 30 dec 02


You can get a hydrometer from any local homebrew supplier.

As far as chemicals being absorbed through the skin, I am probably not
knowledgeable enough to answer this, but yes some can be absorbed through
the skin.

A few years ago I read an article in the local paper about a Dartmouth
University professor. She was doing some research on dimethylmercury.
She spilled a drop or two on her rubber glove, but thought the rubber
would protect her. 10 months later she died from mercury poisoning.

Most of the stuff that we deal with is not this toxic, but chemicals can
be absorbed through the skin.

Link to article about her case

http://www.denison.edu/naosmm/topics/dartmouth.html

Roger Korn on mon 30 dec 02


The hydrometer I have for homebrewing measures densities around .9 to
1.1 - not the range you want for glazes (1.0 - 1.5).

Roger

RPeckham@COOKSONELECTRONICS.COM wrote:

>You can get a hydrometer from any local homebrew supplier.
>

--
Roger Korn
McKay Creek Ceramics
In AZ: PO Box 463
4215 Culpepper Ranch Rd
Rimrock, AZ 86335
928-567-5699 <-
In OR: PO Box 436
31330 NW Pacific Ave.
North Plains, OR 97133
503-647-5464

Vince Pitelka on tue 31 dec 02


> You can get a hydrometer from any local homebrew supplier.

Just a caution that this doesn't always work. Homebrewer's or winemaker's
hydrometers are intended to measure alcohol content, and alcohol is lighter
than water, so those hydrometers are intended to measure the specific
gravity of liquids lighter than water. On many of those hydrometers the
measuring scale does not extend over into the heavier-than-water range, and
therefore would be useless for slip or glazes suspensions. I hate to see
anyone spend money for a hydrometer they can't use, but then, they might put
it to good use making wine or beer.
Best wishes -
- Vince

Vince Pitelka
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Work - wpitelka@tntech.edu
615/597-6801 ext. 111, fax 615/597-6803
http://iweb.tntech.edu/wpitelka/