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<p>Dear Sergio, dear Beth,</p>
<p>the Museum in Berlin, as well as in Bern, were the first
prototype was tested, are using a machine that is using methylene
chloride (DCM) applied as vapor in a vacuum chamber. <br>
</p>
<p>There is a previous publication (only in German) that goes very
deep in the matter of bone preparation and de-greasing: </p>
<div class="page" title="Page 17">
<div class="layoutArea">
<div class="column">
<p><b><span
style="font-size: 10.000000pt; font-family: 'TimesNewRomanPSMT'">Peter
Niederklopfer and Martin Troxler, </span><span
style="font-size: 10.000000pt; font-family: 'TimesNewRomanPS'; font-style: italic">Knochenpräparation
– Handbuch für Praktiker </span></b><span
style="font-size: 10.000000pt; font-family: 'TimesNewRomanPSMT'"><b>(Rothenbrunnen:
Romei AG), 2001</b></span></p>
<p>This technology is very successful in de-greasing bones
extremely effectively, but there is still no publication on
the method. If you are interested in the mater, get in touch
with Martin Troxler (Chief-Preparator of the natural history
museum in Bern) directly. Please write to him if possible in
German. The manufacturer behind the technology is the HEMO
GmbH: <a class="moz-txt-link-abbreviated" href="mailto:k.trautz@hemo-gmbh.de">k.trautz@hemo-gmbh.de</a><br>
</p>
<p><span
style="font-size: 10.000000pt; font-family: 'TimesNewRomanPSMT'"><b><br>
</b></span></p>
<p>All the best,<br>
</p>
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<div class="moz-cite-prefix">Am 14.11.24 um 12:16 schrieb Bethany
Palumbo:<br>
</div>
<blockquote type="cite"
cite="mid:CAPVvR4QfuD08bRbkVsRQFenBq3XDauzd5_00KY_geTBbNUvbTQ@mail.gmail.com">
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<div dir="ltr">
<div dir="ltr">Hi Sergio,
<div><br>
</div>
<div>I understand your plight, smelly bones are something we
all have to deal with at some point in this field!</div>
<div><br>
</div>
<div>Personally I don't recommend soaking skeletal material in
ammonia as ammonia will break down the collagen, potentially
resulting in brittleness and delamination. I have seen this
first hand. I have had success using a weak ammonia solution
(4-10%) in water, scrubbed onto the oily surface with a
tooth brush. This creates a soap scum that can be wiped off
with paper towels. Other safe solvents that might offer some
odor relief include ethanol or acetone wiped over the
surface. Also investigate hot vapour degreasing which is
used in some museums to remove old and fresh fatty
secretions from bones. Correct me if I am wrong, but I think
Berlin have one they use for big mammals. </div>
<div><br>
</div>
<div>All the best,</div>
<div><br>
</div>
<div>Bethany Palumbo,</div>
<div>Head of Conservation Unit,</div>
<div>Museum of Natural History Denmark</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, 8 Nov 2024 at 13:07,
Sergio Montagud <<a
href="mailto:sergio.montagud@gmail.com"
moz-do-not-send="true" class="moz-txt-link-freetext">sergio.montagud@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div class="msg5833523549331237899">
<div lang="ES" style="overflow-wrap: break-word;">
<div class="m_-5782316548822393537WordSection1">
<p><span lang="EN-US">Good morning,</span></p>
<p><span lang="EN-US">This is a query for those
working in skeleton preservation. We have some
recently acquired, disarticulated specimens
prepared by different taxidermists. The issue is
that some of them, especially the larger ones,
still emit a very unpleasant odor that we haven’t
been able to remove, even by soaking them in water
with ammonia. Is there an effective and proven
method for eliminating this bad smell from the
bones, which I assume is caused by residual fat
still trapped in them?</span></p>
<p><span lang="EN-US">Thank you very much.</span></p>
<p><span lang="EN-US">Sergio Montagud</span></p>
<p>--</p>
<p>********************************</p>
<p>Sergio Montagud Alario</p>
<p>Museu [UV] Història Natural</p>
<p>Universitat de València</p>
<p>e-mail: <span lang="EN-US"><a
href="mailto:sergio.montagud@uv.es"
target="_blank" moz-do-not-send="true"><span
lang="ES-TRAD"><span lang="ES-TRAD">sergio.montagud@uv.es</span></span></a></span></p>
<p><span lang="EN-US">********************************</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
</div>
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