<div dir="ltr"><div>When phenolic capped vials are stored as you describe the caps can expand over time and eventually fall off, potentially leading to lots becoming mixed in the bottom of the holding vessel. It's better to discard the cap and replace it with a loose plug of cotton. Face the neck of the vial up so no air bubbles become trapped.<br>
<br></div>Steve.<br></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">Steve Halford (<a href="mailto:halford@sfu.ca" target="_blank">halford@sfu.ca</a>)<br>Museum Technician (Retired) <br>Department of Biological Sciences<br>
Simon Fraser University<br><br></div></div>
<br><br><div class="gmail_quote">On Fri, Jun 13, 2014 at 10:28 AM, Callomon,Paul <span dir="ltr"><<a href="mailto:prc44@drexel.edu" target="_blank">prc44@drexel.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">Folks,<u></u><u></u></p>
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<p class="MsoNormal">We have noticed that in cases where a phenolic resin cap is immersed in alcohol (70-80% ethanol) for long periods (such as when a vial with a sample is included in a larger alcohol-preserved lot) the alcohol becomes discolored. I presume
the resin is leaching something. Does anyone know of any published work on this?<u></u><u></u></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;color:black">Paul Callomon</span></b><span style="font-size:10.0pt;color:black"><br>
<i>Collection Manager, Malacology, Invertebrate Paleontology and General Invertebrates</i></span><span style="color:black"><u></u><u></u></span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;color:black">Academy of Natural Sciences of Drexel University, Philadelphia</span></b><b><span style="font-size:10.0pt;color:black"><u></u><u></u></span></b></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:black">1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA</span><span style="font-size:10.0pt;color:black"><br>
<i><a href="mailto:callomon@ansp.org" target="_blank"><span style="color:blue">callomon@ansp.org</span></a> Tel <a href="tel:215-405-5096" value="+12154055096" target="_blank">215-405-5096</a> - Fax <a href="tel:215-299-1170" value="+12152991170" target="_blank">215-299-1170</a></i></span><span style="font-size:12.0pt;color:black"><u></u><u></u></span></p>
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