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<body style="font: 10pt/normal Segoe UI; font-size-adjust: none; font-stretch: normal;"><div class="GroupWiseMessageBody" id="GroupWiseSection_1740028153000_Joachim.Haendel@zns.uni-halle.de_659232D005F00000BEC929790EDC4731_"><div>Yes, Simon and Gretchen are absolutely right: the immersion in 70% concentrated ethanol is the best way for a extinction of mould.</div><div>See here:</div><div><a href="https://mailman.yale.edu/pipermail/nhcoll-l/attachments/20240704/4b8b3f78/attachment.pdf">https://mailman.yale.edu/pipermail/nhcoll-l/attachments/20240704/4b8b3f78/attachment.pdf</a><br></div><div><br></div><div>But the colours of many birds' eggs are dissolvable in water and even more so in ethanol</div></div><div><br></div><div><br></div><div><div>Best wishes</div><div>Joachim<br></div><span id="GWSignatureSent" style="padding-right: 0px; padding-left: 0px; margin-bottom: 5px; display: block;"><span style="display: block;"><br><span style="font-size: 10pt; display: inline-block; -ms-word-wrap: normal;">
<div><span style="color: rgb(148, 148, 148);"><span style="color: rgb(148, 148, 148);"><font face="Arial" size="2">-- </font></span></span></div><font face="Arial" size="2">
</font><div><span style="color: rgb(148, 148, 148);"><font face="Arial" size="2">Joachim Haendel</font></span></div><font face="Arial" size="2">
</font><div><font face="Arial" size="2"> </font></div><font face="Arial" size="2">
</font><div><font size="2"><font face="Arial"><span style="color: rgb(148, 148, 148);">Center of Natural Science Collections<br>of the Martin Luther University (ZNS)<br>- Entomological Collection -<br><br>Domplatz 4<br>D-06099 Halle (Saale)<br>Germany<br><br>Phone: +49 345 - 55 26 447<br></span><span style="color: rgb(148, 148, 148);">Email: joachim.haendel@zns.uni-halle.de</span></font></font></div></span></span></span><span style="margin-bottom: 5px; display: block;"><br></span><div class="GroupWiseMessageBody" id="GroupWiseSection_1739985895000_AndersonG@CarnegieMNH.Org"><span class="GroupwiseReplyHeader"><br><br>>>> "Anderson, Gretchen" <AndersonG@CarnegieMNH.Org> schrieb am 19.02.2025 um 18:24:<br></span><div><div>Thanks Simon! I agree that using 70-80% ethanol works very well.</div><div><br></div><div>-----Original Message-----</div><div>From: Nhcoll-l <nhcoll-l-bounces@mailman.yale.edu> On Behalf Of Simon Moore</div><div>Sent: Wednesday, February 19, 2025 10:23 AM</div><div>To: Joachim Händel <Joachim.Haendel@zns.uni-halle.de></div><div>Cc: NHCOLL-new <nhcoll-l@mailman.yale.edu></div><div>Subject: Re: [Nhcoll-l] Antw: Mould on bird eggs</div><div><br></div><div>CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.</div><div><br></div><div>Hi Vanessa,</div><div><br></div><div>I have found that brushing with ethanol (at about 70-80%, a traditional way) works well but do it with a soft brush obviously. Also check for acetic acid smells as I have occasionally found acetic acid crystallising on the sheets of bird eggs, particularly in a cold environment (less than 10 deg C) and which removes the outer layer of the shell with the all-important markings. Unsure of the acid source but likely a VOC from somewhere!</div><div><br></div><div>Polyester batting seem to work well in the cabinets and is inert to this kind of deteriogen, including efflorescence.</div><div><br></div><div>With all good wishes, Simon</div><div><br></div><div>Simon Moore MIScT, RSci, FLS, ACR</div><div>Conservator of Natural Sciences and Cutlery Historian.</div><div><br></div><a href="https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.natural-history-conservation.com&c=E,1,IHuhTjrtez0kLx_3Fh93Q_MrDQ0BOuwdOu1MezoTggizZxiaZpIEfyS5I9OStITtWwHltBYz7N-7o1IMIMuk2e1T_hW6eEqavnvCJBqI1yJfIHsLn054&typo=1">https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.natural-history-conservation.com&c=E,1,IHuhTjrtez0kLx_3Fh93Q_MrDQ0BOuwdOu1MezoTggizZxiaZpIEfyS5I9OStITtWwHltBYz7N-7o1IMIMuk2e1T_hW6eEqavnvCJBqI1yJfIHsLn054&typo=1</a><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><span style="color: rgb(128, 0, 64);">> On 19 Feb 2025, at 13:45, Joachim Händel <Joachim.Haendel@zns.uni-halle.de></span><span style="color: rgb(128, 0, 64);"> wrote:</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Hi Vanessa,</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> I think the suggestions you have made are sufficient for the time being.</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Please brush off the eggs under a fume hood.</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Any use of chemical agents (chlorine cleaner) will damage the objects.</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Pay attention to the microclimate in the cabinets. It is best to leave a gap of a few mm to the wall and floor (cabinets with feet) so that the air can circulate and prevent moisture spots.</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> It is important to monitor the climate in the collection, including in the cabinets and drawers. A temperature and humidity logger in the room with wireless sensors in some cabinets is ideal for this.</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Good luck</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Joachim</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> -- Joachim Haendel Center of Natural Science Collections of the</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Martin Luther University (ZNS)</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> - Entomological Collection -</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Domplatz 4</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> D-06099 Halle (Saale)</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Germany</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Phone: +49 345 - 55 26 447</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Email: joachim.haendel@zns.uni-halle.de</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> ></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(128, 0, 64);"> Vanessa Pitusi <vanessa.pitusi@uit.no></span><span style="color: rgb(128, 0, 64);"> schrieb am 19.02.2025 um 09:37:</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Hi,</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> I have found mould on some of the dry bird eggs that we have in our collection.</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Is it enough to brush off the mould, change out the cotton that they rest on, and dry them out, or should they be treated in some way?</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> They will be moved into a new collection room after removing the mould.</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> All the best,</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Vanessa</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Sent from Outlook for iOS</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> _______________________________________________</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Nhcoll-l mailing list</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Nhcoll-l@mailman.yale.edu</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> <a href="https://mailman.yale.edu/mailman/listinfo/nhcoll-l">https://mailman.yale.edu/mailman/listinfo/nhcoll-l</a></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">></span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> _______________________________________________</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> NHCOLL-L is brought to you by the Society for the Preservation of</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> Natural History Collections (SPNHC), an international society whose</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> mission is to improve the preservation, conservation and management of</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> natural history collections to ensure their continuing value to</span><span style="color: rgb(0, 0, 0);"><div><br></div></span><span style="color: rgb(128, 0, 64);">> society. 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