[Nhcoll-l] glass storage for fluid collections
Dirk Neumann
neumann at snsb.de
Mon Sep 9 04:43:29 EDT 2019
Dear Fabian, dear all,
don't want to expand this discussion too much; as John pointed out, just
that those jars are borosilicate jars doesn't render them necessarily a
good jar. The bottom and partially the walls surely are less than 1 mm
thick, and when we checked the jars here in the museum, it seemed that
the annealing was not properly done, as John already pointed out. The
threat on the jar is not continuous and especially in the tall jars the
walls near the neck tend to be thicker and continuously get thinner to
the bottom (likely because the hot glass melt is not evenly blown into
the form).
The prices for the taller jars (> 30 cm) are very close to the properly
done borosilicate (stopper jars and/or flanged cylinders) jars produced
by Stoelzle Oberglass or those done locally here from Schott glass
tubes. The Schott tubes are sold worldwide. Of course you will safe some
quids when purchasing the Vitro jars, but it might be worth considering
the long-term costs as well (replacement, topping up requirements,
increased monitoring, etc.). At the moment, many European collections
see or expect the end of the life span of the famous Copenhagen jars,
which causes massive problems across fluid collections in Europe, as
neither jars or lids can be replaced.
Purchasing 100 mm or 120 mm tall or 300 mm wide jars is not a problem,
and our budget line to purchase jars is rather small. So in the end, it
depends on the philosophy of individual collections, not that much on
the budget lines and availability of jars. The more collections tend to
compromise and accept lower standards, accept increased monitoring
requirements with simultaneous reduced budget lines for staff to do the
job, the more we will loose those companies which provide us with proper
jars that make our lives easier (as they drop out of business because
they can't - and don't want to - compete with Chinese quality standards.
The bulk of jars we use and need on daily basis is a cost-efficient
replacement anyway. The question is if we want to afford a little bit
more money for larger, well-manufactured jars, to safe costs in the long
run.
Cheers,
Dirk
Am 09.09.2019 um 08:31 schrieb Neisskenwirth Fabian:
>
> I’m working with these borosilicate jars very intensively and I really
> can’t complain so much. It’s true that they are very thin and that
> this was not the aim when it was sent to production. But still it’s
> much better than regular soda-lime jars (because it borosilicate). The
> producer is called Vitro. It’s a small German company that makes Laser
> imprinting… Somehow a colleague got them to produce museum jars. This
> thin jars are the result, they still need improvement (specially the
> thin bottom), but in my opinion, it’s the beginning for a new museum
> jar. Where else can you get long jars up to 40 cm with Twist off
> opening off 82mm or 100mm.?
>
> Maybe some other company could take the effort to produce the same
> jars in better quality?
>
> Cheers from Bern,
>
> --
> *Fabian Neisskenwirth*
> Präparation
> Naturwissenschaftlicher Präparator
>
> +41 (0)31 350 72 35
>
> *NATURHISTORISCHES MUSEUM BERN*
> Bernastrasse 15, CH – 3005 Bern
> www.nmbe.ch <http://www.nmbe.ch/>
>
> Eine Institution der Burgergemeinde Bern <https://www.bgbern.ch/>
>
> *Von:*Nhcoll-l [mailto:nhcoll-l-bounces at mailman.yale.edu] *Im Auftrag
> von *Dirk Neumann
> *Gesendet:* Sonntag, 8. September 2019 17:30
> *An:* nhcoll-l at mailman.yale.edu
> *Betreff:* Re: [Nhcoll-l] glass storage for fluid collections
>
> A bit late, but I agree with John; we have recently seen borosilicate
> twist-off jars which are apparently produced in China and are rather
> expensive compared when the enter the market in Europe - compared to
> normal (soda-lime) glass jars used produced for food industry. The
> main issue is (and John likely referred to this) that the glass wall
> especially at the bottom of some those jars was very very thin,
> leading to spontaneous cracking of jars when filled and lifted up or
> after jars where placed on shelves in the storage area.
>
> All the best
>
> Dirk
>
> Am 05.09.2019 um 21:07 schrieb John E Simmons:
>
> It is important to find out where the glass is manufactured, and
> make sure they send you a sample of each size to test. There is a
> lot of glassware entering the market from China and other
> countries that is not properly annealed and thus much more fragile
> than the soda-lime glass we are all used to.
>
> --John
>
>
> John E. Simmons
> Writer and Museum Consultant
>
> Museologica
> /and/
> Associate Curator of Collections
> Earth and Mineral Science Museum & Art Gallery
> Penn State University
> /and/
> Investigador Asociado, Departamento de Ornitologia
> Museo de Historia Natural, Universidad Nacional Mayor de San
> Marcos, Lima
>
> On Thu, Sep 5, 2019 at 2:22 PM Gartner, Heidi RBCM:EX
> <HGartner at royalbcmuseum.bc.ca
> <mailto:HGartner at royalbcmuseum.bc.ca>> wrote:
>
> Hello,
>
> I’ve recently sourced a new potential provider for glass jars
> for our fluid collection. However, the cost is so cheap I am
> suspect of the quality of the jars. I’ve asked them to send
> some spec sheets and I am wondering what the best features for
> long term storage that I should look for? Is soda lime glass
> acceptable?
>
> Thank you for the feedback or direction to recent resources!
>
> *______________________________________________________________________________________________*
>
> *Heidi Gartner, M.Sc. *Collection Manager and Researcher,
> Invertebrates | Collections, Care and Conservation
>
> ROYALBCMUSEUM
> Traditional Territory of the Lekwungen (Songhees and Xwsepsum
> Nations)
> 675 Belleville Street, Victoria, BC Canada V8W 9W2
> T 250 387-2932
> HGartner at royalbcmuseum.bc.ca
> <mailto:HGartner at royalbcmuseum.bc.ca> | royalbcmuseum.bc.ca
> <https://royalbcmuseum.bc.ca>
>
> Join us on:Facebook <https://www.facebook.com/RoyalBCMuseum> |
> Twitter <https://twitter.com/#!/RoyalBCMuseum> | Flickr
> <http://www.flickr.com/photos/36463010@N05/> | Instagram
> <https://www.instagram.com/royalbcmuseum/>
>
> See the astonishing Maya treasures from Guatemala’s National
> Museum and La Ruta Maya at */Maya: The Great Jaguar Rises,
> /*open now until Dec. 31, 2019. Purchase tickets now
> <https://sales.royalbcmuseum.bc.ca/Expresscheckout.aspx?item=35&exhibition=maya>.
>
>
> _______________________________________________
> Nhcoll-l mailing list
> Nhcoll-l at mailman.yale.edu <mailto:Nhcoll-l at mailman.yale.edu>
> https://mailman.yale.edu/mailman/listinfo/nhcoll-l
>
> _______________________________________________
> NHCOLL-L is brought to you by the Society for the Preservation of
> Natural History Collections (SPNHC), an international society
> whose
> mission is to improve the preservation, conservation and
> management of
> natural history collections to ensure their continuing value to
> society. See http://www.spnhc.org for membership information.
> Advertising on NH-COLL-L is inappropriate.
>
>
>
> _______________________________________________
>
> Nhcoll-l mailing list
>
> Nhcoll-l at mailman.yale.edu <mailto:Nhcoll-l at mailman.yale.edu>
>
> https://mailman.yale.edu/mailman/listinfo/nhcoll-l
>
> _______________________________________________
>
> NHCOLL-L is brought to you by the Society for the Preservation of
>
> Natural History Collections (SPNHC), an international society whose
>
> mission is to improve the preservation, conservation and management of
>
> natural history collections to ensure their continuing value to
>
> society. Seehttp://www.spnhc.org for membership information.
>
> Advertising on NH-COLL-L is inappropriate.
>
> --
> Dirk Neumann
> Tel: 089 / 8107-111
> Fax: 089 / 8107-300
> *new email: neumann(a)snsb.de*
> Postanschrift:
> Staatliche Naturwissenschaftliche Sammlungen Bayerns
> Zoologische Staatssammlung München
> Dirk Neumann, Sektion Ichthyologie / DNA-Storage
> Münchhausenstr. 21
> 81247 München
> Besuchen Sie unsere Sammlung:
> http://www.zsm.mwn.de/sektion/ichthyologie-home/
> ---------
> Dirk Neumann
> Tel: +49-89-8107-111
> Fax: +49-89-8107-300
> *new email: neumann(a)snsb.de*
> postal address:
> Bavarian Natural History Collections
> The Bavarian State Collection of Zoology
> Dirk Neumann, Section Ichthyology / DNA-Storage
> Muenchhausenstr. 21
> 81247 Munich (Germany)
> Visit our section at:
> http://www.zsm.mwn.de/sektion/ichthyologie-home/
--
Dirk Neumann
Tel: 089 / 8107-111
Fax: 089 / 8107-300
*new email: neumann(a)snsb.de*
Postanschrift:
Staatliche Naturwissenschaftliche Sammlungen Bayerns
Zoologische Staatssammlung München
Dirk Neumann, Sektion Ichthyologie / DNA-Storage
Münchhausenstr. 21
81247 München
Besuchen Sie unsere Sammlung:
http://www.zsm.mwn.de/sektion/ichthyologie-home/
---------
Dirk Neumann
Tel: +49-89-8107-111
Fax: +49-89-8107-300
*new email: neumann(a)snsb.de*
postal address:
Bavarian Natural History Collections
The Bavarian State Collection of Zoology
Dirk Neumann, Section Ichthyology / DNA-Storage
Muenchhausenstr. 21
81247 Munich (Germany)
Visit our section at:
http://www.zsm.mwn.de/sektion/ichthyologie-home/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.yale.edu/pipermail/nhcoll-l/attachments/20190909/e333eee0/attachment.html>
More information about the Nhcoll-l
mailing list