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<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US">Hi Cindy,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US">I would second Dirk in saying that the ductless fume hoods aren’t great, in my experience, and I would try to lobby hard for a ducted fume hood. We purchased a ductless
fume hood to use in addition to a ducted fume hood for work on formalin-preserved animals and for similar activities to which you described. It was fitted with formaldehyde and carbon filters, but the room would still end up smelling like formalin after a
while. On the one we have there is only one level of airflow. The ‘sash’ just folds up and down but can’t be adjusted very low. This is marketed as a great and modern ductless fume hood, but it just feels a bit rickety. It got us through what we needed to
do, but basically everyone always preferred to use the ducted hood, and it feels much safer to use.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US">Tonya<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Nhcoll-l <nhcoll-l-bounces@mailman.yale.edu>
<b>On Behalf Of </b>Dirk Neumann<br>
<b>Sent:</b> Wednesday, August 7, 2024 5:16 AM<br>
<b>To:</b> nhcoll-l@mailman.yale.edu<br>
<b>Subject:</b> Re: [Nhcoll-l] [EXTERN] ductless fume hoods?<o:p></o:p></span></p>
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<p class="MsoNormal">Hi Cindy,<span style="font-size:12.0pt;line-height:106%"><o:p></o:p></span></p>
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<p class="MsoNormal">invertebrate colleagues used a ductless fume in Munich for sorting mainly formalin specimen that we returned from field work; there we not many pros, mostly cons: depending on the design (how open or closed the hood actually is), you have
(or don't have) a sufficient and direct air flow (the latter being more important for the hood to work efficiently). The other main problem was the weak filter/air flow: because it was a small transportable hood, the filter and thus the surface of the filter
was small as well, which limited capacity of the possible air flow.<o:p></o:p></p>
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<p class="MsoNormal">I would assume that if you work with materials that are really smelly and oozing, it is worth keeping a keeping a close eye on the air flow and if the fume hood is capable to cover a volume of roughly 1 cubic meter.
<o:p></o:p></p>
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<p class="MsoNormal"><a href="https://www.denios.de/lager-und-prozesstechnik/containment/laminar-air-flow-kabine/">The German manufacturer Denios</a> provides good guidance on air flow etc.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p>Hope this is useful<o:p></o:p></p>
<p>Dirk<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Am 06.08.2024 um 20:01 schrieb Opitz, Cindy E:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif">Hello! We are planning some lab renovations and are considering a ductless (filter-based) fume hood. A ducted chemical fume hood in
this lab would require the addition of an industrial air handler, which makes the project cost-prohibitive. Our activities include animal maceration and pickling/tanning, so they are more smelly and less chemical in nature. We occasionally use ethanol under
the hood, for rehousing or topping off jars in the wet collection. Our campus EHS staff have suggested a ducted fume hood would not be necessary for these kinds of activities. I’d like to hear from anyone about their recommendations or experiences (good or
bad) with ductless, filter-based fume hoods in animal prep labs</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;line-height:106%;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<b><span style="font-family:"Arial",sans-serif;color:#151515">Cindy Opitz </span></b><span style="font-family:"Arial",sans-serif;color:#151515">(she/her)<br>
Director of Research Collections</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<span style="font-family:"Arial",sans-serif;color:#151515">Museum of Natural History and Old Capitol Museum</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<span style="font-family:"Arial",sans-serif;color:#151515">Instructor, Museum Studies Certificate Program</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:white">
<span style="font-family:"Arial",sans-serif;color:#151515">The University of Iowa<br>
11 Macbride Hall, Iowa City, Iowa 52242<br>
Office: 319.335.0481</span><o:p></o:p></p>
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<span style="font-family:"Arial",sans-serif;color:#201F1E"><a href="mailto:cindy-opitz@uiowa.edu">cindy-opitz@uiowa.edu</a></span><span style="font-family:"Arial",sans-serif;color:#151515"><br>
</span><b><span style="font-family:"Arial",sans-serif;color:black"><a href="https://mnh.uiowa.edu/" target="_blank">mnh.uiowa.edu,</a>
<a href="https://oldcap.uiowa.edu/">oldcap.uiowa.edu</a> </span></b><o:p></o:p></p>
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<span style="font-family:Roboto;color:#201F1E"><img border="0" width="163" height="78" style="width:1.7013in;height:.8125in" id="Picture_x0020_2" src="cid:image001.png@01DAE8B6.40C05790"></span><o:p></o:p></p>
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<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Nhcoll-l mailing list<o:p></o:p></pre>
<pre><a href="mailto:Nhcoll-l@mailman.yale.edu">Nhcoll-l@mailman.yale.edu</a><o:p></o:p></pre>
<pre><a href="https://mailman.yale.edu/mailman/listinfo/nhcoll-l">https://mailman.yale.edu/mailman/listinfo/nhcoll-l</a><o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>NHCOLL-L is brought to you by the Society for the Preservation of<o:p></o:p></pre>
<pre>Natural History Collections (SPNHC), an international society whose<o:p></o:p></pre>
<pre>mission is to improve the preservation, conservation and management of<o:p></o:p></pre>
<pre>natural history collections to ensure their continuing value to<o:p></o:p></pre>
<pre>society. See <a href="http://www.spnhc.org">http://www.spnhc.org</a> for membership information.<o:p></o:p></pre>
<pre>Advertising on NH-COLL-L is inappropriate.<o:p></o:p></pre>
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<p><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal">-- <span style="font-size:12.0pt;font-family:"Aptos",sans-serif">
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><b><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif">****</span></b><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><b><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif"> </span></b><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><b><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif">Dirk Neumann</span></b><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif">Collection Manager, Hamburg</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif">Postal address:</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><b><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif">Museum of Nature Hamburg</span></b><span lang="EN-US" style="font-family:"Source Sans Pro",sans-serif"><br>
<span style="color:#008669">Leibniz Institute for the Analysis</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span style="font-family:"Source Sans Pro",sans-serif;color:#008669">of Biodiversity Change</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span style="font-family:"Source Sans Pro",sans-serif">Dirk Neumann</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span style="font-family:"Source Sans Pro",sans-serif">Martin-Luther-King-Platz 3</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span style="font-family:"Source Sans Pro",sans-serif">20146 Hamburg<br>
+49 40 238 317 – 628</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><u><span style="font-family:"Source Sans Pro",sans-serif;color:blue"><a href="mailto:d.neumann@leibniz-lib.de">d.neumann@leibniz-lib.de</a></span></u><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><a href="imap://dneumann@webmail.leibniz-lib.de:993/fetch%3EUID%3E/INBOX/Privat/www.leibniz-lib.de"><span style="font-family:"Source Sans Pro",sans-serif">www.leibniz-lib.de</span></a><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span style="font-size:10.0pt;font-family:"Source Sans Pro",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span style="font-size:10.0pt;font-family:"Source Sans Pro",sans-serif">--
<br>
Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels<br>
Postanschrift: Adenauerallee 127, 53113 Bonn, Germany<br>
<br>
Stiftung des öffentlichen Rechts;<br>
Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian Grüter (Kaufm. Geschäftsführer)<br>
Sitz der Stiftung: Adenauerallee 160 in Bonn<br>
Vorsitzender des Stiftungsrates: Dr. Michael Wappelhorst</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;line-height:106%;font-family:"Source Sans Pro",sans-serif"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:0cm;line-height:normal"><span style="font-size:12.0pt;font-family:"Aptos",sans-serif">--
<br>
Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels<br>
Postanschrift: Adenauerallee 127, 53113 Bonn, Germany<br>
<br>
Stiftung des öffentlichen Rechts;<br>
Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian Grüter (Kaufm. Geschäftsführer)<br>
Sitz der Stiftung: Adenauerallee 160 in Bonn<br>
Vorsitzender des Stiftungsrates: Dr. Michael Wappelhorst<o:p></o:p></span></p>
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