[Nhcoll-l] Fluid preservation jar lids

Tue Aug 16 14:09:57 EDT 2022

Hi Lennart and Joosep
(and Simon and Andy - just echoing and adding to both of them)

in the report of the KUR-Projekt at the MfN in Berlin for the restoring of the fluid collections, the recommendation is Japan-paper (Paper Nao) to avoid entangling of appendices and spiny body parts. Alternatively, eye cotton is recommended, as this is the only cotton without any additives; this cotton is also recommended by Cal Zeiss MicroImaging; see page 16 in the PDF<https://www.hornemann-institut.de/de/epubl_txt/2012Neuhaus_KUR.pdf>

Wichtig ist der Verschluss mit einem Wattestopfen, der eventuell mit Japanpapier (PAPER NAO, z.
B. Stärke RK 15) zu umwickeln ist, damit beborstete Präparate sich nicht in der Watte verfangen. Die
Augenwatte der Firma KERMA weist als einzige Watte in Deutschland keinerlei chemische Zusatzstof-
fe auf und ist damit zumindest für Typuspräparate das Material der Wahl. Diese Watte wird auch für
die Reinigung von Optikoberflächen benutzt, Firmenbroschüren von CARL ZEISS MICROIMAGING (Zölf-
fel 2005, 2011) dienten als Anregung für den Einsatz dieser Watte in Nasssammlungen.

At the end of the document are contact information of respective suppliers provided.

Hope this helps
Dirk

Am 16.08.2022 um 19:08 schrieb 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<http://www.natural-history-conservation.com>

On 16 Aug 2022, at 18:06, Bentley, Andrew Charles <abentley at ku.edu><mailto: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
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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<mailto:abentley at ku.edu>
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http://ichthyology.biodiversity.ku.edu
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From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu><mailto: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<mailto: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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Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels
Postanschrift: Adenauerallee 127, 53113 Bonn, Germany

Stiftung des öffentlichen Rechts;
Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian Grüter (Kaufm. Geschäftsführer)
Sitz der Stiftung: Adenauerallee 160 in Bonn
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