[Nhcoll-l] -80 Freezers

[Bentley, Andrew Charles]

Ani

We have been very happy with the new iteration of the Thermo Fisher -80 chest freezers.  Granted we have not had them for very long (maybe a year) - they were purchased to replace failing older models.  They are a lot more efficient in that the compressors do not run constantly.  The freezer shuts down when it reaches temperature and only kicks in again once it warms up by a degree or two.  This puts a lot less strain on the compressors and will hopefully mean they will last a lot longer.

Chest freezers are so much more efficient than uprights in holding temperature.  Uprights lose so much temperature when the door is opened as the temperature literally just falls out of the freezer.  Attached is a quote we received from Fisher at the end of 2022 for both upright and chest however this includes out considerable University of Kansas preferred supplier discount - maybe UMich has something similar though

Hope that helps

Andy
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Andy Bentley
Ichthyology Collection Manager
University of Kansas
Biodiversity Institute
Dyche Hall
1345 Jayhawk Boulevard<x-apple-data-detectors://9/>
Lawrence, KS, 66045-7561<x-apple-data-detectors://9/>
USA<x-apple-data-detectors://9/>

Tel: (785) 864-3863<tel:%28785%29%20864-3863>
Fax: (785) 864-5335<tel:%28785%29%20864-5335>
Email: abentley at ku.edu<mailto:abentley at ku.edu>
ORCID: https://orcid.org/0000-0002-3093-1258
http://ichthyology.biodiversity.ku.edu<http://ichthyology.biodiversity.ku.edu/>
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From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> On Behalf Of Hristova, Ani
Sent: Tuesday, May 14, 2024 11:32 AM
To: nhcoll-l at mailman.yale.edu
Subject: [Nhcoll-l] -80 Freezers

Hi everyone,

The MSU Museum Vertebrate Collection is looking to replace our current -86 freezer used for DNA, tissue, and the like. Could you share tips or best practices that you used in choosing your freezers? For example, information like: most important product specs, particularly reputable brands, brands to stay away from, any issues you've encountered?

Thank you, and I'm looking forward to hearing your thoughts!

All the best,
Ani

Ani Hristova
PhD Candidate
Department of Integrative Biology
Ecology, Evolutionary Biology, and Behavior Program
Michigan State University

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