[Nhcoll-l] Tips for tiny jars?

[Robert Waller]

I am amazed at how effective PE (polyethylene) cone liners are for sealing small jars.
Rob


________________________________
From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> on behalf of Shoobs, Nate <shoobs.1 at osu.edu>
Sent: Thursday, July 02, 2026 11:33 AM
To: Claire Smith <claire.smith at reading.ac.uk>; nhcoll-l <nhcoll-l at mailman.yale.edu>
Subject: Re: [Nhcoll-l] Tips for tiny jars?

Sorry, to be clear, if you glass vials and jars with lids/closures made from either polypropylene with an f217 foam liner or a phenolic resin + poly cone seal* you shouldn’t see aby evaporation for many years.

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Nathaniel F. Shoobs, Curator of Mollusks
College of Arts & Sciences Dept. of Evolution, Ecology, and Organismal Biology, The Ohio State University
Museum of Biological Diversity
1315 Kinnear Rd, Columbus, OH 43212
614-688-1342 (Office)
mbd.osu.edu<http://mbd.osu.edu/>
________________________________
From: Shoobs, Nate <shoobs.1 at osu.edu>
Sent: Thursday, 02 July 2026 11:30:56
To: Claire Smith <claire.smith at reading.ac.uk>; nhcoll-l <nhcoll-l at mailman.yale.edu>
Subject: Re: [Nhcoll-l] Tips for tiny jars?

Hey Claire,
What is the type of closure?
If you’re topping off that frequently chances are the lids you’re using are bad. If you use vials/jars made from phenolic resin with poly-cone seals, or alternatively polypropylene lids with f217 foam liners, you shouldn’t have to top up narrow-necked containers for years or decades in most cases.


-
Nathaniel F. Shoobs, Curator of Mollusks
College of Arts & Sciences Dept. of Evolution, Ecology, and Organismal Biology, The Ohio State University
Museum of Biological Diversity
1315 Kinnear Rd, Columbus, OH 43212
614-688-1342 (Office)
mbd.osu.edu<http://mbd.osu.edu/>
________________________________
From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> on behalf of Claire Smith <claire.smith at reading.ac.uk>
Sent: Thursday, 02 July 2026 11:22:05
To: nhcoll-l <nhcoll-l at mailman.yale.edu>
Subject: [Nhcoll-l] Tips for tiny jars?

Hi everyone (with apologies for cross-posting), We have a selection of small specimens in our fluid collection, in jars of around 10 to 25 mL, and they evaporate incredibly quickly. We have to top them up almost annually, which isn't great for
Hi everyone (with apologies for cross-posting),

We have a selection of small specimens in our fluid collection, in jars of around 10 to 25 mL, and they evaporate incredibly quickly. We have to top them up almost annually, which isn't great for the specimens. The rate of evaporation doesn't seem to be worse with a particular fluid, or with a particular sealant.

Do those of you who work with fluid collections have any tips for how to prevent these tiny jars from evaporating so quickly?


Best wishes,
Claire



*******

Claire Smith (she/her), AFHEA

Postdoctoral Research Associate, Cole Museum of Zoology

University of Reading
claire.smith at reading.ac.uk<mailto:claire.smith at reading.ac.uk>

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