Hoyer's solution

[H.G. Richter]

On Thu, 18 Jan 1996, Brian Brown wrote:

> I suggest you look at the following paper:
>
> Upton, M.S. 1993. Aqueous gum-chloral slide mounting media: an historical
> review. Bulletin of Entomological Research.
>
>         The author suggests that Euparol is the best alternative.
>
>
The stuff Brian has mentioned as being suggested by the author M.S. Upton
is called *Euparal* rather than Eupar*o*l and is manufactured by the
CHROMA-GESELLSCHAFT (Schmidt GmbH & Co.), Koengen, Germany. It is an
ethanol-soluble synthetic embedding medium with an refraction index of
1,483 (liquid) and 1,535 (hardened), respectively. It has widely and
successfully replaced Canada Balsam and other xylene/toluene-soluble
embedding media, at least in the preparation of permanent slides of wood
sections.
This information, though rather marginal, might help those interested in
judging its potential for the respective purpose.


Dr. H.G. Richter
Institute of Wood Biology
Federal Research Centre for Forestry and Forest Products, Hamburg, Germany
e-mail: hrichter at aixh0401.holz.uni-hamburg.de