<div dir="ltr">Adding to what Gretchen was saying, I'd recommend you check this website: <a href="https://museumpests.net/">https://museumpests.net/</a> for many of these questions, and to also join the list serve to get better answers about specific pest issues.<div><br></div><div>Now, about the heat sealer, we use this one to seal the Marvelseal, if I'm not mistaken: <a href="https://www.uline.com/Product/Detail/H-1069/Poly-Bag-Sealers/Crimper-Hand-Sealer-6?pricode=WA9053&gadtype=pla&id=H-1069&gclid=CjwKCAiA6aSABhApEiwA6Cbm_15tkrJRC4tpC_8FQJyNKCq8WOryVBpaUpqdfOFvKDVPaWcLOYecOhoCsT0QAvD_BwE&gclsrc=aw.ds">https://www.uline.com/Product/Detail/H-1069/Poly-Bag-Sealers/Crimper-Hand-Sealer-6?pricode=WA9053&gadtype=pla&id=H-1069&gclid=CjwKCAiA6aSABhApEiwA6Cbm_15tkrJRC4tpC_8FQJyNKCq8WOryVBpaUpqdfOFvKDVPaWcLOYecOhoCsT0QAvD_BwE&gclsrc=aw.ds</a> <br><div><br></div><div>Best,</div><div>Mariana</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:12.8px"><font color="#351c75"><b>Mariana Di Giacomo, PhD</b></font></div><div style="font-size:12.8px"><b style="color:rgb(53,28,117);font-size:small">Natural History Conservator, Yale Peabody Museum</b><div style="font-size:small"><span style="color:rgb(53,28,117)">Co-chair, Emerging Professionals Committee, SPNHC</span><br></div><div style="font-size:small"><span style="color:rgb(53,28,117)">Associate Editor, Collection Forum, SPNHC </span></div><div style="font-size:small"><span style="color:rgb(53,28,117)">Secretary/Communications APOYOnline</span></div><div style="font-size:small"><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El jue, 21 ene 2021 a las 9:05, Anderson, Gretchen (<<a href="mailto:AndersonG@carnegiemnh.org">AndersonG@carnegiemnh.org</a>>) escribió:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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Hi again Lennart,
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<div>We freeze herbarium sheets at -20 C. Length of time is usually a week or two, just to be sure of the death rate. The sheets are wrapped in two layers of plastic (or two polyethylene trash bags(clear) for the reasons in my last email. We do a single freeze.
A double freeze as you described puts the specimens at greater risk and is no more effective at killing insects. In fact a double freeze can encourage the pest to develop freeze resistance. </div>
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<div>Hope this helps. </div>
<div>Gretchen<br>
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<div dir="ltr">Sent from my iPhone</div>
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<blockquote type="cite">On Jan 21, 2021, at 7:52 AM, Anderson, Gretchen <<a href="mailto:AndersonG@carnegiemnh.org" target="_blank">AndersonG@carnegiemnh.org</a>> wrote:<br>
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<div dir="ltr"> To add to what Marianna and Rachael said- put 2 layers of plastic over the specimens, if possible. The plastic is there to 1) eliminate stress from change in Relative humidity and the shock of losing moisture in the specimen &2) prevent condensation
after on the specimen.
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<div>Gretchen Anderson</div>
<div>Conservator</div>
<div>CMNH<br>
<br>
<div dir="ltr">Sent from my iPhone</div>
<div dir="ltr"><br>
<blockquote type="cite">On Jan 21, 2021, at 1:45 AM, Lennart Lennuk <<a href="mailto:Lennart.Lennuk@loodusmuuseum.ee" target="_blank">Lennart.Lennuk@loodusmuuseum.ee</a>> wrote:<br>
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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:black">Hi!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:black"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:black">Thank you a lot. This has been great help!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:black"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:black">I believe I plan also some low-ogygen treatments. So what kind on heat-sealer to use and does it need 3-phase electricity?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:black"><br>
Best!<br>
Lennart<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:black"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span style="font-size:11pt;font-family:Calibri,sans-serif"> Mariana Di Giacomo [mailto:<a href="mailto:maru.digi@gmail.com" target="_blank">maru.digi@gmail.com</a>]
<br>
<b>Sent:</b> Wednesday, January 20, 2021 6:17 PM<br>
<b>To:</b> <a href="mailto:rachael@amartconservation.com" target="_blank">rachael@amartconservation.com</a><br>
<b>Cc:</b> Lennart Lennuk <<a href="mailto:Lennart.Lennuk@loodusmuuseum.ee" target="_blank">Lennart.Lennuk@loodusmuuseum.ee</a>>; <a href="mailto:Nhcoll-l@mailman.yale.edu" target="_blank">Nhcoll-l@mailman.yale.edu</a><br>
<b>Subject:</b> Re: [Nhcoll-l] Heatsealer<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Hi Lennart,<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I have to second Rachael's comments. Make sure you are not leaving any holes while you are doing the taping and the specimens will be well protected before going into the freezer. The difference between freezer and low oxygen in this sense
is that in both cases if you see the hole, it's a problem, but microholes are a problem for low-oxygen but not an issue for freezing, so heat sealing is not necessary.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Best,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Mariana<u></u><u></u></p>
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<p class="MsoNormal"><br clear="all">
<u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;color:rgb(53,28,117)">Mariana Di Giacomo, PhD</span></b><span style="font-size:9.5pt"><u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><b><span style="color:rgb(53,28,117)">Natural History Conservator, Yale Peabody Museum</span></b><span style="font-size:9.5pt"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="color:rgb(53,28,117)">Co-chair, Emerging Professionals Committee, SPNHC</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="color:rgb(53,28,117)">Associate Editor, Collection Forum, SPNHC </span><u></u><u></u></p>
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<p class="MsoNormal"><span style="color:rgb(53,28,117)">Secretary/Communications APOYOnline</span><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">El mié, 20 ene 2021 a las 9:52, <<a href="mailto:rachael@amartconservation.com" target="_blank">rachael@amartconservation.com</a>> escribió:<u></u><u></u></p>
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<blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm">
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<p class="MsoNormal"><span lang="EN-US">Hello Lennart,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Obviously I cannot speak for anyone else, but the majority of colleagues I know who freeze specimens as a remedial pest measure wrap them in polyethylene plastic
that is secured with packing tape rather than sealed with a heat sealer. I know that some people have investigated which tapes do well in low-temperatures, but I have found that most good quality packing tapes will survive the process and keep the plastic
sheeting in place. This is in contrast, of course, to low-oxygen treatments where a good seal for the barrier films require a heat sealer of some type.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Sincerely,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Rachael<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> <u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> <u></u><u></u></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US">Rachael Perkins Arenstein<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">A.M. Art Conservation, LLC<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Conservation Treatment, Preservation Consulting & Collection Management<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Tel: 917-796-1764 (she/her/hers)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.amartconservation.com%2f&c=E,1,g8GJFg2AoaNyTgAIIVIwMCbhBKPjkCbTt54JPmzrTt4PRqFA4Kn3bbJyp5OGZT9tAqKkQ-gooZ0DnIeAyxqovDhtf1mEPYi4omqlPGlNsw,,&typo=1" target="_blank">www.amartconservation.com</a><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="mailto:rachael@amartconservation.com" target="_blank">rachael@amartconservation.com</a><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <u></u><u></u></span></p>
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<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Nhcoll-l <<a href="mailto:nhcoll-l-bounces@mailman.yale.edu" target="_blank">nhcoll-l-bounces@mailman.yale.edu</a>>
<b>On Behalf Of </b>Lennart Lennuk<br>
<b>Sent:</b> Wednesday, January 20, 2021 3:51 AM<br>
<b>To:</b> <a href="mailto:nhcoll-l@mailman.yale.edu" target="_blank">nhcoll-l@mailman.yale.edu</a><br>
<b>Subject:</b> [Nhcoll-l] Heatsealer<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black">Hello!</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black"> </span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black">What kind of heatsealers you use for sealing stuffed animals before sending them to freezers (getting rid of pests for example)?</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black">Does the heatsealer need three-phase electricity?</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black"> </span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black">Head!<br>
Lennart</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"> <span lang="EN-US"><u></u><u></u></span></p>
</div>
</div>
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