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<p class="MsoNormal">Hi Nicki,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you can, get some device for measuring fluid concentration. This could be a simple glass hydrometer (Traille-type) or a more expensive electronic device like the Anton Paar Snap-41. As long as what you have is ethanol, you should be
able to find the concentration. That’s important in deciding what to do next; if you move something from 50% to 80%, for example, it might well shrink as more water is driven out of it.
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Paul Callomon<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Collection Manager, Malacology and General Invertebrates<i><o:p></o:p></i></span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:12.0pt;color:black">Academy of Natural Sciences of Drexel University</span></b><b><span style="font-size:12.0pt;color:black"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA<br>
<i><a href="mailto:prc44@drexel.edu"><span style="color:#0563C1">prc44@drexel.edu</span></a> Tel 215-405-5096 - Fax 215-299-1170</i><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><b>From:</b> Nhcoll-l <nhcoll-l-bounces@mailman.yale.edu>
<b>On Behalf Of </b>Nicole Seiden<br>
<b>Sent:</b> Friday, August 20, 2021 4:25 PM<br>
<b>To:</b> NHCOLL-new <nhcoll-l@mailman.yale.edu><br>
<b>Subject:</b> [Nhcoll-l] How to transfer specimens out of an unknown preservative?<o:p></o:p></p>
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<p><b><span style="font-family:"Arial",sans-serif;font-variant:small-caps">External.<o:p></o:p></span></b></p>
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<span style="color:black">Hello and happy Friday! <o:p></o:p></span></p>
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<span style="color:black">I was recently hired as a collections manager with the initial tasks of digitizing and re-opening the collections. The collections have been “ignored” for some time now and both the specimens and the database have numerous discrepancies
that I’ve been addressing. Currently, I’m working with our wet-preserved specimens and want to ask the community for some advice. <o:p></o:p></span></p>
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<span style="color:black">A large portion of our specimens (> 4,000) are preserved in an unknown fluid (listed as N/A), and many of which require topping up or rehousing to larger jars. Our most common preservative is ethanol, and it’s very likely that most
are in ethanol or isopropyl, though I have had the unpleasant misfortune of opening a few preserved in formalin. <o:p></o:p></span></p>
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<span style="color:black">Previous discussions indicated there is not a method to determine the fluid type, but is there a way to transfer the specimens into a known preservative? My initial thought is to rinse (or soak?) them in DI water and then transfer
into ethanol. Does this pose any risk to the specimens (i.e., lead to damage)? Are there any precautions I should follow? <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in;background:white"><span style="font-size:12.0pt;color:black">Many thanks in advanced, <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in;background:white"><span style="font-size:12.0pt;color:black">Nicki<o:p></o:p></span></p>
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<p style="margin-left:.5in;background:white"><b><span style="color:#174E86">Nicki L. Seiden, M.Sc.</span></b><span style="color:black"><o:p></o:p></span></p>
<p style="margin-left:.5in;background:white;text-align:start"><span style="color:#174E86">She/Her/Hers</span><span style="color:black"><o:p></o:p></span></p>
<p style="margin-left:.5in;background:white;text-align:start"><i><span style="color:#174E86">Research Collection Manager</span></i><span style="color:black"><o:p></o:p></span></p>
<p style="margin-left:.5in;background:white;text-align:start"><span style="color:#174E86">Harbor Branch Oceanographic Institute</span><span style="color:black"><o:p></o:p></span></p>
<p style="margin-left:.5in;background:white;text-align:start"><span style="color:black"><a href="mailto:hmcqueen@fau.edu" target="_blank"><span style="color:#0563C1">nseiden@fau.edu</span></a><o:p></o:p></span></p>
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