[NHCOLL-L:3293] RE: Gallon Size Clear Plastic Containers

[Erik Åhlander]

Did the alcohol concentration keep stable also? Some friends (commercial ecology investigators) kept about 10000 ethanol samples in plastic bottles. After some 10-15 years they realized that although the levels in the jars was OK the concentration was much lower through diffusion through the plastic. It was quit costly to refill the collection. No, I don't know what kind of plastic.

* * * * * * * * * * * * * * * * * * * * * *
Erik Ahlander, Collection Manager - Fishes
Swedish Museum of Natural History
(Naturhistoriska riksmuseet)
Section for Vertebrate Zoology
(Frescativagen 40)
P.O. Box 50007; S-104 05 STOCKHOLM, Sweden
Phone +46 8 51954118; Fax +46 8 51954212
email: erik.ahlander at nrm.se
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-----Original Message-----
From: owner-nhcoll-l at lists.yale.edu [mailto:owner-nhcoll-l at lists.yale.edu]On Behalf Of HJ Walker
Sent: Thursday, January 18, 2007 4:09 AM
To: CAHawks at aol.com; jsimmons at ku.edu; delre at mpm.edu; nhcoll-l at lists.yale.edu
Cc: jass at mpm.edu
Subject: [NHCOLL-L:3292] RE: Gallon Size Clear Plastic Containers


Hello All,
I've had a small experiment going with both isopropanol and ethanol in PETE containers for over ten years.  This plastic has no cracks and is still pliable.  Some Mexican friends have had these results for 20 years.
Cheers,   H.J. 




Hi Christine,

 

I agree with John, PET is a good alternative. Gaylord makes straight-sided PET containers for fluid-preserved specimens, but doesn't list a gallon-size on their Web site. You might contact Christine Allen directly to see what she can find for you  <mailto:Christine.Allen at gaylord.com> Christine.Allen at gaylord.com.

 

Cathy

 

 

In a message dated 1/17/2007 3:58:02 P.M. Eastern Standard Time, jsimmons at ku.edu writes:


Christine,


You might consider PET containers as an alternative-less oxygen permeance, clearer, more durable, and available in many sizes. I have seen gallon size PET-you might check with Gaylord.  Also, check out their large polycarbonate containers.



 

--John



 

John E. Simmons


Collections Manager, Natural History Museum & Biodiversity Research Center


and


Director, Museum Studies Program


University of Kansas


1345 Jayhawk Boulevard


Lawrence, Kansas 66045-7561


Telephone 785-864-4508


FAX 785-864-5335


 <mailto:jsimmons at ku.edu> jsimmons at ku.edu


 <http://www.nhm.ku.edu/herpetology> www.nhm.ku.edu/herpetology


 <http://www.ku.edu/~museumst> www.ku.edu/~museumst



 


 

  _____  

From: owner-nhcoll-l at lists.yale.edu [mailto:owner-nhcoll-l at lists.yale.edu] On Behalf Of Del Re, Christine
Sent: Wednesday, January 17, 2007 2:33 PM
To: nhcoll-l at lists.yale.edu
Cc: Jass, Joan
Subject: [NHCOLL-L:3288] Gallon Size Clear Plastic Containers



 

we are in search of clear plastic (polypropylene preferred) containers for the storage of alcohol collections.  Can anyone provide a lead for such containers before we broaden our so far successful search?


many thanks for any information that you can provide, Chris


Christine Del Re                Voice:  (414) 278-2780
Senior Conservator              Fax:    (414) 278-6100
Milwaukee Public Museum e-mail: delre at mpm.edu
800 W. Wells St.
Milwaukee, WI  53233-1478




 




 

Catharine Hawks

Conservator

2419 Barbour Road

Falls Church VA 22043-3026 USA

t/f 703.876.9272



-- 
H.J. Walker, Jr.
Scripps Institution of Oceanography
University of California, San Diego  0208
La Jolla, CA   92093-0208
USA             hjwalker at ucsd.edu
phone:858-534-2199   fax:858-534-5306

Campus street  address for FedEx, UPS, DHL:
8675 Discovery Way, 224 / 231 Vaughan Hall
La Jolla, CA   92037

SIO Marine Vertebrates Collection website:
http://collections.ucsd.edu/mv/

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