[NHCOLL-L:4182] Re: Large glass jars and closures

[Moore, Simon]

Hi Chris,

Have you considered stainless steel tanks?  They have the advantage of being more robust and less vulnerable to physical knocks and if you use a thick glass lid then you can see the specimens and any problems that may occur to them.  I am always slightly apprehensive of larger containers if made of glass. 

The National Museum of Ireland use these and if you need contact details there, let me know.


With all good wishes, 
Simon Moore, MIScT, FLS, ACR,
Senior Conservator of Natural Sciences. 
Hampshire County Council
Recreation & Heritage Department,
Museums & Archives Service,
Chilcomb House, Chilcomb Lane,
Winchester SO23 8RD. UK.
Internal  8 327 6737
01962 826737
http://www.hants.gov.uk/museum/biology 



-----Original Message-----
From: owner-nhcoll-l at lists.yale.edu [mailto:owner-nhcoll-l at lists.yale.edu] On Behalf Of Neumann Dirk
Sent: 29 January 2009 08:25
To: christophermatthewstinson at gmail.com
Cc: NHCOLL-L at lists.yale.edu
Subject: [NHCOLL-L:4181] Re: Large glass jars and closures

Hi Chris,

similar problems here in Europe. One of the last providers of larger glasses for natural history collections, Stölzle Oberglas from Austria, seem to have stopped production of glasses with ground stoppers. 
Confronted with the situation that we had to store approx. 120 kg of deep sea sharks with up to 1 m length, we have been lucky in finding a company specialised in producing chemical glassware components (such as dessicators, condensers, etc.). For production of our large glass containers (up to 1200 mm hight and diameter of 250 mm), Schott Duran glass tubes (borosilicate glass) are used, which are available up to an diameter of 250 mm. Glasses made from these glass tubes look like a big beaker closed with a flat grounded glass pane on a surface grinding. 
With this technique, glasses of all sizes are possible, avoiding bottle necks and cracking plastic liners.

Pricing is comparable to "normal" ground glasses, e.g. a glass with 130 mm diameter and a hight of 400 mm costs ca. 75,- Eur (approx. 100,- U$).

I will copy you the homepage of our German provider so you get an idea, surely there are similar companies in Canada as well.
http://www.ggm-glastechnik.de/1280/start1280.htm

Hope this helps

Dirk



Chris Stinson schrieb:
> Hi,
>
> I was wondering if anyone could give me a source for glass jars larger 
> than 1gal, preferably 3-6gal sizes with wide mouths(130mm).  Also if 
> anyone could point me in the direction of closures for such jars - 
> ideally polypropylene with polyethylene liners.  These will be used to 
> house fluid preserved fish specimens.  If there are any ideas for 
> glass jars or other types of containers  of similar size to 5 or 6 gal  
> glass jars with wider mouths any info would also be
> appreciated.   I have already  found some polycarbonate containers 
> from University Products but I'm not sure of their long term viability.
>
> Thanks
> Chris Stinson
> Assistant Curator
> Beaty Biodiversity Museum, UBC
> Vancouver, BC
>


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