[Nhcoll-l] Question about jar grease in fluid collections

[Callomon,Paul]

I use vacuum grease, which is more stable than Vaseline and apparently insoluble in ethanol, water or formaldehyde. Dow-Corning make it.

PC


Paul Callomon
Collection Manager, Malacology and General Invertebrates
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Academy of Natural Sciences of Drexel University, Philadelphia
1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
prc44 at drexel.edu<mailto:prc44 at drexel.edu> Tel 215-405-5096 - Fax 215-299-1170



From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> On Behalf Of Esther Dondorp
Sent: Thursday, February 27, 2020 9:32 AM
To: nhcoll-l at mailman.yale.edu
Subject: [Nhcoll-l] Question about jar grease in fluid collections


External.
Dear all,

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 this<https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.drogisterij.net%2Fverzorging%2Flichaamsverzorging%2Flichaamsverzorging-verzorging%2Fcreme%2Fvaseline-petroleum-jelly-original-42182634%3Fpartnercode%3D222%26gclid%3DEAIaIQobChMIiOnM3_fx5wIVWeN3Ch1X_wOHEAQYASABEgJTI_D_BwE&data=02%7C01%7Cprc44%40drexel.edu%7C5a74d3febbfc47b6148408d7bb91d971%7C3664e6fa47bd45a696708c4f080f8ca6%7C0%7C0%7C637184107404189922&sdata=9A%2Ffxq3zyXCKmyqCjHXaMsIhcEvAqVG3EcsMn2Wd%2FRs%3D&reserved=0> 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!

Many thanks,




Esther Dondorp
Senior Collectiebeheerder
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