[Nhcoll-l] borosilicate glass

Thu Oct 29 12:51:42 EDT 2015

I agree with Andy; we have used flint glass jars here since the 1950s and they seem not to suffer deterioration in the 40- to 50- year time frame that we treat as the "major overhaul" cycle for our alcohol collection. Closures are another matter, though; we are replacing almost all of those that were put on in the 1970s, mostly as a precautionary measure against failure in known age-limited materials such as Bakelite and steel.

PC

Paul Callomon
Collection Manager, Malacology, Invertebrate Paleontology and General Invertebrates
________________________________
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1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
callomon at ansp.org<mailto:callomon at ansp.org> Tel 215-405-5096 - Fax 215-299-1170

From: nhcoll-l-bounces at mailman.yale.edu [mailto:nhcoll-l-bounces at mailman.yale.edu] On Behalf Of Bentley, Andrew Charles
Sent: Thursday, October 29, 2015 12:43 PM
To: Gartner, Heidi RBCM:EX; 'nhcoll-l at mailman.yale.edu'
Subject: Re: [Nhcoll-l] borosilicate glass

Heidi

In my humble opinion I think borosilicate glass is overrated and not worth the expense.  We have been using regular good grade glass jars that we purchase from Kols Containers (https://urldefense.proofpoint.com/v2/url?u=http-3A__www.oberk.com_about_kols-2Dcontainers-2Dbaltimore-2Dmd&d=AwIFAw&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=WP7BHXGOGSrQb1QJigqqo7lUqBG8Ebkb3eV_LmJVIls&s=PnLqRwPg2xFwK0U0kpZ_fhCR4pSqF_4sLJnLPn7xAzk&e= <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.oberk.com_about_kols-2Dcontainers-2Dbaltimore-2Dmd&d=AwMFAw&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=4GJpiB_8sHQIZcbLRZh0rFibkm3apLKqAAd46F5mbYM&s=wsJal3EZ1XzYMj9Gr1U_ZrA4pTZ1ZkQN80tu4xxtK1w&e=>) and we have never had any issues with the jars - no failures, no handling issues etc.  The jars have very good closures that are alcohol resistant and do a great job at preventing evaporation.  I will say that all of our specimens are originally fixed in formalin and so I have no empirical evidence about effect on DNA quality.  The greatest quality about these jars are that they are relatively inexpensive (see attached price list) and come in a LARGE variety of sizes up to a gallon jar.  Anything above that size goes into tanks.

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

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From: nhcoll-l-bounces at mailman.yale.edu<mailto:nhcoll-l-bounces at mailman.yale.edu> [mailto:nhcoll-l-bounces at mailman.yale.edu] On Behalf Of Gartner, Heidi RBCM:EX
Sent: Tuesday, October 27, 2015 4:52 PM
To: 'nhcoll-l at mailman.yale.edu' <nhcoll-l at mailman.yale.edu<mailto:nhcoll-l at mailman.yale.edu>>
Subject: [Nhcoll-l] borosilicate glass

Hello All!

I am looking to source some storage jars for our fluid preserved invertebrate collection at the RBCM.  I understand that borosilicate glass is optimal for use in museum work as it can withstand greater physical, chemical, and temperature stress.  However, I am having difficulties sourcing borosilicate jars in the sizes I need.  It seems most jars sold are either flint or soda-lime glass.  So I am hoping the group can help answer the following questions:

*         Do you have a good supplier in North America for a wide range of borosilicate jar sizes?

*         What are the long term effects of using flint or soda-lime glass?  (e.g. Greater risk to general handling? Any chemical reactions that may affect DNA work?)

Thank you for your time,
______________________________________________________________________________________________
Heidi Gartner      Collection Manager, Invertebrates  |  Collections, Knowledge and Engagement

[cid:image001.png at 01D11248.8F004580]
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