Hello Pest-listers –
Does anyone have a -40 ultracold chest freezer purchased in the last 5 years 
that they like and could provide a spec for? Or if not a specific model, a 
manufacturer that you have found reliable over that or a longer period of time? 
We have a walk-in freezer that we have used for many years; this will be a 
supplemental unit.

A couple specific models are mentioned in older posts, but I haven’t found 
recommendations from firsthand experience:

  *   SO-LOW CHEST STYLE FREEZER TO -40ºC MODEL CH40-22

https://www.so-low.com/content/data/product/spec_sheets/CH40-22.pdf

  *   Thermo Fisher Scientific Revco™ CxF Series -40°C Ultra-Low Temperature 
Chest Freezer

https://www.thermofisher.com/order/catalog/product/ULT2050-10-A

Thanks very much!


[signature_2829500402]
Julia Sybalsky
Conservator
Science Conservation Department
American Museum of Natural History
200 Central Park West
New York, NY 10024-5192
e: [email protected]<mailto:[email protected]>
m: 413-695-9844 | w: 212-313-7533

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