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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Dear Tonya,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Acetone is no problem at all. It the most used degreasing agent for smaller bones used in taxidermy for long time. Usually we do at least 3 baths.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">One can use the baths for other steps, so you can save acetone.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">This means:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="color:#1F497D"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="color:#1F497D">Reuse the first bath on the second batch of bones and then reuse the second bath on the third batch. Until you have a total of 3 times used acetone for the first bath of each batch of bones.
After 4 times used, the acetone is soaked with fat and can be disposed (in proper chemical disposal of course).<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="color:#1F497D"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><u><span lang="EN-US" style="color:#1F497D">For the third and final bath always use fresh acetone</span></u><span lang="EN-US" style="color:#1F497D">.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">You can leave them for a week for every step in the bath and there will be no damage at all.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Degreasing bones is the most important step for proper conservation. So I recommend you do this on every fresh made skeleton. Older fat is more difficult to dissolve, but still better than not doing
anything.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Fat in bones becomes acid and subsequently damages the structure.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Hope this helps.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Cheers from Bern.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:#1F497D;mso-fareast-language:DE-CH">--<br>
<b>Fabian Neisskenwirth</b><br>
Präparation<br>
Naturwissenschaftlicher Präparator<br>
<br>
+41 (0)31 350 72 35<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:#1F497D;mso-fareast-language:DE-CH"><a href="http://www.nmbe.ch/"><b><span style="color:black;text-decoration:none">NATURHISTORISCHES
MUSEUM BERN</span></b><span style="color:black;text-decoration:none"><br>
Bernastrasse 15, CH – 3005 Bern<br>
www.nmbe.ch</span></a><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:#1F497D;mso-fareast-language:DE-CH"><a href="https://www.bgbern.ch/"><span style="color:black;text-decoration:none">Eine
Institution der Burgergemeinde Bern</span></a><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="DE" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:DE-CH">Von:</span></b><span lang="DE" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:DE-CH"> Nhcoll-l [mailto:nhcoll-l-bounces@mailman.yale.edu]
<b>Im Auftrag von </b>Haff, Tonya (NCMI, Crace)<br>
<b>Gesendet:</b> Montag, 12. August 2019 05:01<br>
<b>An:</b> nhcoll-l@mailman.yale.edu<br>
<b>Betreff:</b> [Nhcoll-l] acetone on bones<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-AU">Hello all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Just a quick question to confer on what people think about applying acetone to bones to clean them up a bit? We have some researchers who would like to apply this technique to some bird bones we sent them. In general
I do not want chemicals applied to our bones, but I’m wondering what the consensus is on acetone?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU">Tonya<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">---------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">Dr Tonya Haff<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">Collections Manager<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">Australian National Wildlife Collection<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">National Research Collections Australia, CSIRO<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">Canberra, Australia
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">Phone: (+61) 02 6242 1566 (office)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">(+61) 0419 569 109 (mobile)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">I am in Thursdays and Fridays
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU" style="mso-fareast-language:EN-AU">Please call or text my mobile for a fast reponse Monday – Wednesday<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
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