<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br clear="all"></div><div class="gmail_quote"><div dir="ltr"><div style="font-family:arial,helvetica,sans-serif">Hi Jennifer,</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">Silicon based lubricants like the one in your photo should not be used on any ground glass fittings. As we learned in the 1970's, over time the silicon fuses the glass surfaces together. Stopcocks won't turn and glass jars won't open.</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">Best,</div><div style="font-family:arial,helvetica,sans-serif">Steve.</div><div style="font-family:arial,helvetica,sans-serif"><br clear="all"></div><div><div dir="ltr" data-smartmail="gmail_signature"><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></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 27, 2020 at 9:09 AM Steve Halford <<a href="mailto:halford@sfu.ca" target="_blank">halford@sfu.ca</a>> wrote:<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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<font size="2" face="Tahoma"><b>From:</b> Nhcoll-lOn Behalf OfTrimble, Jennifer Winifred<br>
<b>Sent:</b> Thursday, February 27, 2020 9:09:29 AM (UTC-08:00) Pacific Time (US & Canada)<br>
<b>To:</b> Lazo-Wasem, Eric; <a href="mailto:nhcoll-l@mailman.yale.edu" target="_blank">nhcoll-l@mailman.yale.edu</a><br>
<b>Subject:</b> Re: [Nhcoll-l] Question about jar grease in fluid collections<br>
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<p class="MsoNormal">This is what we use too.</p>
<p class="MsoNormal">Best,</p>
<p class="MsoNormal">Jennifer</p>
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<p class="MsoNormal"><b>From:</b> 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>Lazo-Wasem, Eric<br>
<b>Sent:</b> Thursday, February 27, 2020 12:07 PM<br>
<b>To:</b> <a href="mailto:nhcoll-l@mailman.yale.edu" target="_blank">nhcoll-l@mailman.yale.edu</a><br>
<b>Subject:</b> Re: [Nhcoll-l] Question about jar grease in fluid collections</p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black">BTW - If you use vacuum grease (what we have used for 40 years) it can be quite difficult to clean off of the glass surfaces should the need arise. For those times when one wishes to clean the
jar completely and reseal, I have found mineral oil is helpful, followed by a scrubbing with "Alconox." </span></p>
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<p><span style="font-size:12pt;color:black">Eric A. Lazo-Wasem, Senior Collections Manager</span></p>
<p><span style="font-size:12pt;color:black">Division of Invertebrate Zoology</span></p>
<p><span style="font-size:12pt;color:black">Peabody Museum of Natural History</span></p>
<p><span style="font-size:12pt;color:black">Yale University</span></p>
<p><span style="font-size:12pt;color:black">170 Whitney Avenue</span></p>
<p><span style="font-size:12pt;color:black">New Haven, CT 06520</span></p>
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<p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Nhcoll-l <<a href="mailto:nhcoll-l-bounces@mailman.yale.edu" target="_blank">nhcoll-l-bounces@mailman.yale.edu</a>> on behalf of Callomon,Paul <<a href="mailto:prc44@drexel.edu" target="_blank">prc44@drexel.edu</a>><br>
<b>Sent:</b> Thursday, February 27, 2020 10:47 AM<br>
<b>To:</b> Esther Dondorp <<a href="mailto:esther.dondorp@naturalis.nl" target="_blank">esther.dondorp@naturalis.nl</a>>;
<a href="mailto:nhcoll-l@mailman.yale.edu" target="_blank">nhcoll-l@mailman.yale.edu</a> <<a href="mailto:nhcoll-l@mailman.yale.edu" target="_blank">nhcoll-l@mailman.yale.edu</a>><br>
<b>Subject:</b> Re: [Nhcoll-l] Question about jar grease in fluid collections</span>
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<p>I use vacuum grease, which is more stable than Vaseline and apparently insoluble in ethanol, water or formaldehyde. Dow-Corning make it.</p>
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<p>PC</p>
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<p style="background:white none repeat scroll 0% 0%"><b><span style="font-size:12pt;color:black">Paul Callomon</span></b><span style="font-size:10pt;color:black"><br>
<i>Collection Manager, Malacology and General Invertebrates</i></span></p>
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<p style="background:white none repeat scroll 0% 0%"><b><span style="font-size:10pt;color:black">Academy of Natural Sciences of Drexel University, Philadelphia</span></b></p>
<p style="background:white none repeat scroll 0% 0%"><span style="font-size:10pt;color:black">1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA<br>
<i><a href="mailto:prc44@drexel.edu" target="_blank"><span style="color:rgb(5,99,193)">prc44@drexel.edu</span></a> Tel 215-405-5096 - Fax 215-299-1170</i></span></p>
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<p style="margin-left:0.5in"><b>From:</b> 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>Esther Dondorp<br>
<b>Sent:</b> Thursday, February 27, 2020 9:32 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] Question about jar grease in fluid collections</p>
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<p style="margin-left:0.5in">Just a short question - we always use vaseline to seal gound jar stoppers, now that we cannot use our old supplier anymore the support department ordered the commercial vaseline petroleum jelly like<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__nam05.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Fwww.drogisterij.net-252Fverzorging-252Flichaamsverzorging-252Flichaamsverzorging-2Dverzorging-252Fcreme-252Fvaseline-2Dpetroleum-2Djelly-2Doriginal-2D42182634-253Fpartnercode-253D222-2526gclid-253DEAIaIQobChMIiOnM3-5Ffx5wIVWeN3Ch1X-5FwOHEAQYASABEgJTI-5FD-5FBwE-26data-3D02-257C01-257Ceric.lazo-2Dwasem-2540yale.edu-257Ccedc46695e7049889cbb08d7bb9c567d-257Cdd8cbebb21394df8b4114e3e87abeb5c-257C0-257C0-257C637184152457750927-26sdata-3D06C4O4Tx5wzzhuHisssu13B-252B-252BKXc-252Bwcaw279uwj6Qts-253D-26reserved-3D0&d=DwMFAw&c=WO-RGvefibhHBZq3fL85hQ&r=NFkXm5rU8D1yKtGhU6p549OkNixrA966AjbwYMN3-Uo&m=W5TG-saNh1l_NR3htfLPKC8lbKX0ovNqKm4jf9VaY9g&s=TkwGUS8nRONwlfj1gXaHg1ROJm5qXbQpBKg-ANFbwDA&e=" target="_blank">
this</a> one. I was wondering if we can use it or that it has additional additives that can effect the balance inside the jar. Is there an acid free or other alternative? Wondering what other people use! </p>
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<p style="margin-left:0.5in">Many thanks,</p>
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<p style="margin-left:0.5in"><span style="font-family:"Arial",sans-serif">Esther Dondorp</span>
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<p style="margin-left:0.5in"><span style="font-family:"Arial",sans-serif">Senior Collectiebeheerder</span></p>
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