[Nhcoll-l] [EKSTERN] Re: [EXT] whale foetus

Wed Oct 26 04:28:49 EDT 2022

Hei again,

Thanks to all of you for recommendations, both about container and fluid.
I asked our fasility management earlier about fire issues, but got no good answer. Anyway I have to deal with this as soon as possible.

Best regards
Annika

Fra: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> På vegne av Dirk Neumann
Sendt: 25. oktober 2022 21:19
Til: nhcoll-l at mailman.yale.edu
Emne: [EKSTERN] Re: [Nhcoll-l] [EXT] whale foetus

Dear Annika,

jumping onto paul's post this is how this could look like:

[cid:image001.png at 01D8E924.F5984080]

This is a huge Distochdus specimen in a borosilicate glass cylinder with 30 cm diameter and a height of 75 centimetres. The borosilicate tubes are from Schott (which you may know e.g. from Schott duran glassware in labs). When still in Munich, we had a local producer specialised in technical glassware for universities.

The widest diameter is 30 cm, the length up to 2 metres, but anything above 1 metre really gets very heavy and difficult to transport. The jars have a flanged closure that should be shoul with a high quality vacuum joint grease (that is silicone-free). For putting such large (ethanol) cylinders on display, it is worth considering having them in a separate room (i.e. outside the museum space) where visitors can watch the specimen through window from the exhibition space. That avoids faulty compromises for the storage fluid (which usually don't work and often lead to severe deterioration of the specimen after some time - and there are many examples) and helps to avoid expensive installation in the visitor area the meet safety standards etc.

Any other solutions (aquarium tanks, acrylic containers, etc.) will fail at some point. There was a case in Germany when a large formalin container (customised aquarium after the historic glass cylinder was damaged and cracked) suddenly burst during the opening hours of the museum. Surely something to avoid.

Hope this helps
Dirk

Am 25.10.2022 um 16:52 schrieb Callomon,Paul:
Where fluid volume is an issue, hanging the specimen vertically in the classic cylindrical jar offers the best ratio of beast to liquid. A high-quality jar will not distort the view optically by much, and having a single gasket and no joints makes sealing much easier.
However: such jars are frighteningly expensive. We keep a Giant Pacific Octopus in a glass Whittall-Tatum jar of 30 cm diameter and 60 cm height (42 liters) that dates from about 100 years ago. If anything happened we could rehouse the octopus in a lidded pail, but could not afford a new jar...

Paul Callomon
Collection Manager, Malacology and General Invertebrates
________________________________
Academy of Natural Sciences of Drexel University
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><mailto:nhcoll-l-bounces at mailman.yale.edu> On Behalf Of Valerie Tomlinson
Sent: Tuesday, October 25, 2022 10:03 AM
To: Annika Sander <Annika.Sander at vestfoldmuseene.no><mailto:Annika.Sander at vestfoldmuseene.no>; nhcoll-l at mailman.yale.edu<mailto:nhcoll-l at mailman.yale.edu>
Subject: Re: [Nhcoll-l] [EXT] whale foetus

External.
Hi Anniker
What are your national regulations about volumes of flammable liquids in public areas? I assume this specimen is in ethanol? That may have an influence on the size and type of container you are allowed, and what sort of fume extraction is required in the area, especially if the container is not sealed.
We are presently dealing with redoing a display of wet specimens but are limited by that fact that we are not allowed more than 35L total of ethanol for the available floorspace of the room.
Assuming no such limits on your space, then I think the main issue is that your whale looks a little cramped, and the fluid level is too low, allowing parts to dry out. It's personal opinion, but I'd go for a slightly larger container in the same orientation, topped up a little higher.
Presumably the volume and mass of liquid requires strong joins at the corners to prevent the container from falling apart. You might get slightly less intrusive corners with a stronger material. Would gasketed steel work better?
That's my 2 cents.
Valerie Tomlinson

From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu<mailto:nhcoll-l-bounces at mailman.yale.edu>> On Behalf Of Annika Sander
Sent: Tuesday, October 25, 2022 9:44 AM
To: nhcoll-l at mailman.yale.edu<mailto:nhcoll-l at mailman.yale.edu>
Subject: [EXT][Nhcoll-l] whale foetus

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Dear all,

First of all, I'm very greatful for this mailinglist and learnt a lot by reading here.

Now to my question

We have a wet specimen, a big whale foetus (app. 70x30cm) in an aquarium like container, which should go to exhibition soon.
The container isn't tight and not as aesthetic as wanted. Se picture attached.
We really want to get a better solution for exhibiting this specimen.
Which container would you recommend for such a big specimen?
Should it better lie og be in an upright position?

Every comment is appreciated.

Best regards from Norway

Med vennlig hilsen
Annika Sander,
Møbelkonservator NKF-N

Avd. Arkiv og forvaltning
tlf: 981 87 851
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Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels
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Stiftung des öffentlichen Rechts;
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