Method of storing biological samples

Details Method of storing biological samples Method of storing biological samples

2006-07-14

2009-08-04

Doerrler, William C (Department: 3744)

Refrigeration

Storage of solidified or liquified gas

Including cryostat

C062S006000, C062S047100, C062S062000

Reexamination Certificate

active

07568353

ABSTRACT:
A method of storing biological samples in which the biological samples are stored in a stack within a vessel interior of an insulated vessel. A pool of liquid cryogen is maintained within the vessel interior by condensing cryogenic vapor boiled off of the pool of liquid cryogen with a cryocooler having a cold finger. The cryocooler and cold finger are positioned so that a cold heat exchanger of the cold finger is in thermal contact with the cryogenic vapor and is positioned above the stack, so as to also maintain a temperature difference within the insulated vessel, between a bottom region of the stack and a top region of the stack, of no greater than about 65K.

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