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<div class="moz-cite-prefix">Hi Susan,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">the colouring is normal - what you can
see there is basically lipids, haemoglobin (if there are open
wounds) and other substances of low molecular weight diluting from
the specimen into the storage fluid. If the soft stain of the
fluid is bearable for your purposes, leave it as it is, as it will
balance further leaching from the specimen. If you (continue) to
exchange the fluid, you will continue the process (it should stop
if the equilibrium inside the fluid is reached).</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Sealing the jar: if this is a screw-on
lid, you can enhance it e.g. with parafilm. If this should be some
sort of permanent seal (which would be easy to realise), then
bee-wax candles are a good and reasonable alternative to produce a
good (air tight) seal (use the candle and carefully melt the wax
around the neck of the jar to close the gap to the lid - this also
works with flanged jars, but the wax on the flange of the beaker
should be evenly spread and still hot and fluid, when the lid is
placed onto it).</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">I would avoid rinsing it with Isoprop
at this stage (if it is in ethanol) already; surely would cause
more harm than improving the current status of the specimen.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">And yes, John is still around and may
have careful comments on my straight-forward offers ;-)</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Hope this helps</div>
<div class="moz-cite-prefix">Dirk<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Am 17.03.2020 um 18:41 schrieb Susan
Gallagher:<br>
</div>
<blockquote type="cite"
cite="mid:5c972834-4baa-ebfc-53e0-491e97a64163@ptd.net">Hello
List,
<br>
<br>
Question on final preparation of a wet specimen. This is for
educational use only ('m at a nature center, not a museum.)
<br>
<br>
Nearly two years ago my center received a dead black bear cub,
around 3.5 kg.
<br>
<br>
Since then, and on the advice of John Simmons (John are you still
on this list??) I shot it up with a full bottle of Everclear, then
put it in a plastic bag full of ETOH (like marinating meat) and
left it in a refrigerator.
<br>
<br>
Well today I took it out, squashed it into a jar, and it looks
fantastic! No odor really other than alcohol, and no slippage of
the fur. Just one tiny spot that looks a little raw, probably from
the cub's original injury.
<br>
<br>
I'd like to seal him up in the jar in clear liquid, as colorless
as I can get it.
<br>
<br>
The liquid I drained him from was slightly brownish, like weak
tea, and he still has some of that liquid coming out of him.
<br>
<br>
Should I rinse him first with water? Or with isopropyl alcohol?
Then fill the jar with ETOH?
<br>
<br>
Also any advice on sealing the lid? The jar I have had actually
been donated by someone on this list who had been looking to
re-home some 3-5 gallon glass jars a while ago. It came with a
screw-on metal lid with a waxy paper insert.
<br>
<br>
This doesn't need to last forever. Education collections generally
do not.
<br>
<br>
Any advice appreciated. We have several wet specimens here that
make great learning motivators for kids. And we also have lots to
teach kids and visitors about black bears, so I think this will
make a great teaching tool--if I can make it look as "acceptable"
as a dead baby bear in a jar can be for the public.
<br>
<br>
Thanks for your time in helping a long-time list lurker.
<br>
<br>
Sue
<br>
<br>
</blockquote>
<p><br>
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<p><br>
Dirk Neumann<br>
<br>
Tel: 089 / 8107-111<br>
Fax: 089 / 8107-300<br>
neumann(a)snsb.de<br>
<br>
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<br>
---------<br>
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Dirk Neumann<br>
<br>
Tel: +49-89-8107-111<br>
Fax: +49-89-8107-300<br>
neumann(a)snsb.de<br>
<br>
postal address:<br>
<br>
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The Bavarian State Collection of Zoology<br>
Dirk Neumann, Section Ichthyology / DNA-Storage<br>
Muenchhausenstr. 21<br>
81247 Munich (Germany)<br>
<br>
Visit our section at:<br>
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