[s-cars] Toluene....and other bargains

[Robert Myers]

At 09:17 AM 11/2/2002 -0500, S4audinut at aol.com wrote:
>>I must also differ with " Xylene on your hands will immediately draw all
>>moisture from your skin,"  Xylene and water are, for all purposes,
>>immiscible.  Xylene will remove the oil from your skin but not the
>>water.  Xylene on your hands is not a good idea but let's don't get all
>>panicked about it.  As far as the rest of your statement goes, I have n
>
>
>I am happy to hear this as I have been exposed. Like all things in
>hospitals risks must be minimized, this is why they care us too death
>about it, manufacturers do as well. Thanks for clarifying this, altho the
>use in a lab is to take ?all moisture from tissue samples so ??
>Rod
>---

Xylene is used in a part of an overall process to prepare tissues for
examination under a microscope.  Water is removed from tissues by soaking
the tissue in alcohol.  The alcohol is then removed from the tissue by
soaking in xylene.  The xylene is the replaced in the tissue by soaking the
tissue sample in a succession of xylene/wax solutions with ever increasing
amounts of wax and decreasing levels of xylene until, finally, the tissue
ends up embedded in a piece of wax.  The imbedded tissue is then sliced
very carefully using a microtome and the thin slices are then mounted on a
slide for examination.  I have left out a couple of the intermediate steps
of the process but these are the essentials.

It is the alcohol which actually removes the water from the tissue sample,
not xylene.

Uh, have we strayed a bit from RAC?  (Required Audi Content)


Bob
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  Robert L. Myers   304-574-2372
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