Does anyone have a planning rule of thumb for how long a scientific freezer can be expected to maintain temperature for biological sample storage during a power outage?
I recognize that there are many details being overlooked in such a broad brush question, but I believe that if they are undisturbed, well-maintained freezers should be able to maintain temperatures without power for a a day or two. I recognize that "well-maintained" may not describe all freezers found in laboratories. And that older freezers may not come back on after power restored. And many other factors are involved... but for practical planning purposes, am I off-base?
Thanks for any information on this.
Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
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