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<p class="MsoNormal">Dear colleagues,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am currently working on an exhibition project involving fluid-preserved specimens, and I am exploring the possibility of replacing ethanol with glycerol for long-term display purposes. The main objective is to reduce fire hazards and
mitigate health risks in display environments (cases that are not airtight).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am preparing to present this proposal internally. As this practice is not yet established in my institution and tends to raise concerns, I would be very grateful for any feedback from professionals who have experience using glycerol in
this context.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To clarify:<o:p></o:p></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3">The specimens are of strictly pedagogical value, they are not scientifically rare or culturally significant.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3">We aim for long-term display in semi-sealed cases with limited air exchange.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3">I understand that transferring specimens from ethanol to glycerol requires several days of transitional baths in demineralized water to avoid osmotic shock and tissue damage. I am
considering a gradual transition: ethanol 70<span style="font-family:"Arial",sans-serif"> </span>% → 50<span style="font-family:"Arial",sans-serif"> </span>% → 30<span style="font-family:"Arial",sans-serif"> </span>% → 10<span style="font-family:"Arial",sans-serif"> </span>%,
followed by glycerol in increasing quart-step dilutions. I will let it in a minimum of 4 hours for small specimen (5 cm).<o:p></o:p></li></ul>
<p class="MsoListParagraph"><o:p> </o:p></p>
<p class="MsoNormal">Have you used glycerol for display purposes in your institution? If so, under what conditions, and with what types of specimens? Any technical advice, protocol suggestions, or reference materials would be most appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you very much in advance for your insights. They will be very helpful in supporting a safer and more sustainable exhibition strategy.<o:p></o:p></p>
<p class="MsoNormal">Best regards, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Marion<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<td style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;" width="253"><font color="#4f4f4f" face="Verdana" size="1">Marion BILLOT</font><br />
<font color="#4f4f4f" face="Verdana" size="1">Collaboratrice support scientifique<br>Invertébrés<br>T. +41 22 418 6459</font><br />
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