[Histonet] minus 80 freezer safe time in power outage

[Morken, Timothy]

Hi all, For a minus 80 freezer what would you consider a "safe" time period that it can go without power before the temperature gets too high and contents need to be transferred (assuming door stays closed)?  I'm thinking -40 would be a cutoff temp to move samples. Anyone else think differently about that?

Thanks for any info!


Tim Morken
Supervisor, Electron Microscopy/Neuromuscular Special Studies
Department of Pathology
UC San Francisco Medical Center
505 Parnassus Ave, Box 1656
Room S570
San Francisco, CA 94143

(415) 353-1266 (ph)
(415) 514-3403 (fax)
tim.morken <@t> ucsfmedctr.org<mailto:tim.morken <@t> ucsfmedctr.org>