[Nhcoll-l] Fluid preservation jar lids

[Simon Moore]

…and to follow on from Andy’s comment - cork is a temporary closure (fine in the field, but will lead to evaporation in storage due to its semi-permeability).  Rubber bungs either go rock hard or expand - either way they become irremovable!

With all good wishes, Simon

Simon Moore MIScT, RSci, FLS, ACR
Conservator of Natural Sciences and Cutlery Historian,

www.natural-history-conservation.com


> On 16 Aug 2022, at 18:06, Bentley, Andrew Charles <abentley at ku.edu> wrote:
> 
> Joosep
>  
> We have been using a polyester fiber fill (https://www.amazon.com/Fairfield-Poly-Premium-Fiber-32-Ounce/dp/B004ALQ0M2) for small tubes in our various collections for some time.  Cork and rubber break down over time in contact with ethanol and should be avoided.  It has the advantage of not wadding up like cotton wool does while providing a porous barrier for exchange of alcohol and being inert and not affected by alcohol or formalin over time.  It is very inexpensive and available at most hobby or craft stores or online.
>  
> Hope that helps
>  
> Andy
>     A  :             A  :             A  :
>  }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<)))_°>
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> Andy Bentley
> Ichthyology Collection Manager
> University of Kansas
> Biodiversity Institute
> Dyche Hall
> 1345 Jayhawk Boulevard
> Lawrence, KS, 66045-7561
> USA
> 
> Tel: (785) 864-3863
> Fax: (785) 864-5335 
> Email: abentley at ku.edu  
> ORCID: https://orcid.org/0000-0002-3093-1258
> http://ichthyology.biodiversity.ku.edu
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>  
> From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> On Behalf Of Joosep Sarapuu
> Sent: Tuesday, August 16, 2022 3:39 AM
> To: nhcoll-l at mailman.yale.edu
> Subject: [Nhcoll-l] Fluid preservation jar lids
>  
> Dear all,
> We would like to know which lid is the best for small jars for fluid specimens. We have an idea that when we collect (for excample small coastal specimens) in the same area and same date we can sort them out in the small jars and place small jars in the big jar (like in the picture) to save space and it will be comfortable to manage these. We will put alcohol in both jars, the small ones and big one also. But right now we do not know which is the best way to close the small jars to prevent specimens to fall out. Is some kind of cotton, or plastic or something else the best. Can somebody help us?
>  
> Sincerely,
> Joosep Sarapuu
> Estonian Natural History Museum
> 59031393
>  
> <image001.jpg>
>  
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