<div dir="ltr"><div>I want to second Rob's reminder that we should all publish our work more often. Well said, Rob.<br><br>In addition to the PPA tape and plumber's tape, another product that may improve jar seals (depending on the jar and lid combination) is Teflon (PTFE) in wide rolls. Sheets of the Teflon can be cut and stretched over the top of the jar before the lid is applied, similar to the way you would apply Parafilm (the PTFE is less permeable than Parafilm, and thinner). As with the tape, however, each time the lid is removed, the Teflon sheet will have to be replaced.<br>
<br></div>In the US, the wide Teflon is ften sold as artifact wrap. Both PPA tape and the Teflon wrap are available from University Products:<br>
<p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt">University Products Inc. </span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt">517 Main Street </span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">Holyoke, MA 01040</span><span style="font-size:12pt;line-height:115%"></span></span></p>
<span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">1-800-628-1912</span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><a href="http://www.universityproducts.com/events.php"><span style="font-size:12pt;line-height:115%">http://www.universityproducts.com/events.php</span></a><span style="font-size:12pt;line-height:115%"></span></span></p>
<span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">�</span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">Polypropylene
Sealing Tape</span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">Item
number 854-0172, 1 inch x 72 yards</span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">�</span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">Teflon
PTFE Artifact Wrap</span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><p class="MsoNormal" style="margin-bottom:0.0001pt"><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:12pt;line-height:115%">Item
833-5100, roll 10� x 100 ft</span></span></p><span style="font-family:arial,helvetica,sans-serif">
</span><br></div><div class="gmail_extra"><br clear="all"><div>John E. Simmons<br>Museologica<br>128 E. Burnside Street<br>Bellefonte, Pennsylvania 16823-2010<br><a href="mailto:simmons.johne@gmail.com" target="_blank">simmons.johne@gmail.com</a><br>
303-681-5708<br><a href="http://www.museologica.com" target="_blank">www.museologica.com</a><br>and<br>Adjunct Curator of Collections<br>Earth and Mineral Science Museum & Art Gallery<br>Penn State University<br>University Park, Pennsylvania<br>
and<br>Lecturer in Art<br>Juniata College<br>Huntingdon, Pennsylvania<br></div>
<br><br><div class="gmail_quote">On Sat, Jan 11, 2014 at 10:36 AM, Robert Waller <span dir="ltr"><<a href="mailto:rw@protectheritage.com" target="_blank">rw@protectheritage.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="white" link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thank you for the reminder Simon:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u>�<u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Michele Steigerwald and Sylvie Laframboise<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">TAPE APPLICATION: A JAR SEALING METHOD FOR REDUCING ETHANOL EVAPORATION IN FLUID-PRESERVED COLLECTIONS<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Collection Forum Fall 1996, Volume 12, Number 2<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u>�<u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Almost 20 years ago now but since Sylvie and Michele published their work in our Collection Forum journal it is easy for any of us to access at: <a href="http://www.spnhc.org/media/assets/cofo_1996_V12N2.pdf" target="_blank">http://www.spnhc.org/media/assets/cofo_1996_V12N2.pdf</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u>�<u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">A good reminder for all of us to submit our work for publication!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Rob<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u>�<u></u></span></p>
<div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <a href="mailto:nhcoll-l-bounces@mailman.yale.edu" target="_blank">nhcoll-l-bounces@mailman.yale.edu</a> [mailto:<a href="mailto:nhcoll-l-bounces@mailman.yale.edu" target="_blank">nhcoll-l-bounces@mailman.yale.edu</a>] <b>On Behalf Of </b>Simon Moore<br>
<b>Sent:</b> January 11, 2014 5:33 AM<br><b>To:</b> John E Simmons; Callomon,Paul<br><b>Cc:</b> <a href="mailto:nhcoll-l@mailman.yale.edu" target="_blank">nhcoll-l@mailman.yale.edu</a></span></p><div><div class="h5"><br><b>Subject:</b> Re: [Nhcoll-l] PTFE tape on jars<u></u><u></u></div>
</div><p></p></div></div><div><div class="h5"><p class="MsoNormal"><u></u>�<u></u></p><div><p class="MsoNormal"><strong><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Dear All involved,</span></strong><u></u><u></u></p>
</div><div><p class="MsoNormal">�<u></u><u></u></p></div><div><p class="MsoNormal"><strong><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">I have tried PTFE tape also and find, as John suggests, that it works well on jars with lids that are getting past-their-best and would normally need replacing.� However it does string together and fall apart when the jar is opened again and the time saved in having to replace it each time might well justify purchasing new jars anyway. </span></strong><u></u><u></u></p>
</div><div><p class="MsoNormal"><strong><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">However, I recall the Mmes Steigerwald and Laframboise tested some tape by 3M back in the 1990s that went around the outside edge of the jar seal and was effective.� I know that this has since been superseded by something else...?</span></strong><u></u><u></u></p>
</div><div><p class="MsoNormal">�<u></u><u></u></p></div><div><p class="MsoNormal"><strong><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">With all good wishes, Simon. </span></strong><u></u><u></u></p>
</div><div><p class="MsoNormal">�<u></u><u></u></p></div><div><p class="MsoNormal"><strong><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Simon Moore MIScT, RSci, FLS, ACR</span></strong><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
<strong><span style="font-family:"Arial","sans-serif"">Conservator of Natural Sciences and Cutlery Historian,</span></strong><br><strong><span style="font-family:"Arial","sans-serif""><a href="http://www.natural-history-conservation.com" target="_blank">www.natural-history-conservation.com</a> </span></strong></span></b><u></u><u></u></p>
</div><blockquote style="border:none;border-left:solid black 1.5pt;padding:0cm 0cm 0cm 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt"><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">----- Original Message ----- <u></u><u></u></span></p>
</div><div><p class="MsoNormal" style="background:#e4e4e4"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> <a href="mailto:simmons.johne@gmail.com" title="simmons.johne@gmail.com" target="_blank">John E Simmons</a> <u></u><u></u></span></p>
</div><div><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">To:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> <a href="mailto:prc44@drexel.edu" title="prc44@drexel.edu" target="_blank">Callomon,Paul</a> <u></u><u></u></span></p>
</div><div><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Cc:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> <a href="mailto:nhcoll-l@mailman.yale.edu)" title="nhcoll-l@mailman.yale.edu" target="_blank">NH-COLL listserv (nhcoll-l@mailman.yale.edu)</a> <u></u><u></u></span></p>
</div><div><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Sent:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> Saturday, January 11, 2014 2:34 AM<u></u><u></u></span></p>
</div><div><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Subject:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> Re: [Nhcoll-l] PTFE tape on jars<u></u><u></u></span></p>
</div><div><p class="MsoNormal"><u></u>�<u></u></p></div><div><div><div><p class="MsoNormal">Paul,<u></u><u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt">Whether or not the Teflon (PTFE) plumber's tape helps will depend on quality of the closures on the jars. If the closures are made of good plastic (such as flexible polypropylene) or metal that is not oxidized, and have a good liner (e.g., a Teflon liner or in the case of metal lids, a compressible gasket around the inner edge) but the threads of the jar a a bit deep or the lid fits a bit loose, the tape can help by closing the gap between the jar and the lid. If you have a good quality lid that fits tightly on the jar, then its probably not worthwhile to use the tape. If you have lids that have tiny perforations (e.g., metal lids with micro-oxidation points) or plastic that is very thin or has microscopic cracks, then the tape probably won't help.<br>
<br>There is an easy way to test whether or not the tape application improves your jar/lid combination. Fill a number of jars with storage strength preservative fluid (no specimens!) and close some with the Teflon tape and some without. Either mark the fluid levels on the outside of the jar with a grease pencil, or better yet, weigh each jar. Put the jars in a water bath and heat it to around 40-50C for a couple of weeks, then check the amount of remaining fluid in the jars and compare.<u></u><u></u></p>
</div><p class="MsoNormal" style="margin-bottom:12.0pt">--John<u></u><u></u></p></div><div><p class="MsoNormal"><br clear="all"><u></u><u></u></p><div><p class="MsoNormal">John E. Simmons<br>Museologica<br>128 E. Burnside Street<br>
Bellefonte, Pennsylvania 16823-2010<br><a href="mailto:simmons.johne@gmail.com" target="_blank">simmons.johne@gmail.com</a><br><a href="tel:303-681-5708" value="+13036815708" target="_blank">303-681-5708</a><br><a href="http://www.museologica.com" target="_blank">www.museologica.com</a><br>
and<br>Adjunct Curator of Collections<br>Earth and Mineral Science Museum & Art Gallery<br>Penn State University<br>University Park, Pennsylvania<br>and<br>Lecturer in Art<br>Juniata College<br>Huntingdon, Pennsylvania<u></u><u></u></p>
</div><p class="MsoNormal" style="margin-bottom:12.0pt"><u></u>�<u></u></p><div><p class="MsoNormal">On Fri, Jan 10, 2014 at 4:48 PM, Callomon,Paul <<a href="mailto:prc44@drexel.edu" target="_blank">prc44@drexel.edu</a>> wrote:<u></u><u></u></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"><div><div><p class="MsoNormal">Folks,<u></u><u></u></p><p class="MsoNormal">�<u></u><u></u></p><p class="MsoNormal">
At least 20 years ago (before my time here), white plumbers� tape was wrapped around the edge of the lids and onto the sides of all the bottle and jars in a certain section of our alcohol collections. This is the PTFE tape that plumbers use to seal threads; it is thin, soft and non-adhesive. Presumably the idea was to provide a secondary vapor barrier in addition to the jar lid seal. <u></u><u></u></p>
<p class="MsoNormal">We are now doing long-overdue major maintenance on this collection, and are trying to assess the efficacy of this tape. I�d be very interested to hear from anyone who (a) has used it and can show it works (b) has used it and can show it doesn�t work, or (c) who considered using it but decided not to, and why.<u></u><u></u></p>
<p class="MsoNormal">�<u></u><u></u></p><p class="MsoNormal">�<u></u><u></u></p><p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt">Paul Callomon</span></b><span style="font-size:10.0pt"><br><i>Collection Manager, Malacology, Invertebrate Paleontology and General Invertebrates</i></span><u></u><u></u></p>
<div class="MsoNormal" style="text-align:center;background:white" align="center"><span style="font-size:10.0pt"><hr align="center" size="2" width="100%"></span></div><p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt">Academy of Natural Sciences of Drexel University, Philadelphia</span></b><u></u><u></u></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt">1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA<br><i><a href="mailto:callomon@ansp.org" target="_blank">callomon@ansp.org</a> Tel <a href="tel:215-405-5096" target="_blank">215-405-5096</a> - Fax <a href="tel:215-299-1170" target="_blank">215-299-1170</a></i></span><u></u><u></u></p>
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<br>_______________________________________________ <br>NHCOLL-L is brought to you by the Society for the Preservation of<br>Natural History Collections (SPNHC), an international society whose<br>mission is to improve the preservation, conservation and management of<br>
natural history collections to ensure their continuing value to<br>society. See <a href="http://www.spnhc.org" target="_blank">http://www.spnhc.org</a> for membership information.<u></u><u></u></p></blockquote></div></div>
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