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

[S4audinut at aol.com]

--
[ Picked text/plain from multipart/alternative ]
In a message dated 11/02/2002 9:38:39 AM Eastern Standard Time,
robert at s-cars.org writes:

> 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.
>
>

I stand corrected again and will never quote my laymans knowledge of lab
process, I just buy the chit for them and dispose of it.
Rod