초록 ▼

The temperature of a biological specimen or other object may be controlled by supporting the object within a vessel containing a liquid cryogen above the liquid cryogen level and varying the vertical spacing between the object and the liquid cryogen level. The vessel is provided with vertically cont

The temperature of a biological specimen or other object may be controlled by supporting the object within a vessel containing a liquid cryogen above the liquid cryogen level and varying the vertical spacing between the object and the liquid cryogen level. The vessel is provided with vertically continuous inner walls of high thermal conductivity, e.g., metal walls, to provide a vertical temperature gradient within the vessel above the liquid cryogen level.

대표청구항 ▼

Method of controlling the temperature of an object comprising (a) providing an upwardly open vessel containing a liquid cryogen, the vessel having vertically continuous inner walls of high thermal conductivity to provide a vertical temperature gradient above the level of liquid cryogen, (b) supporti

Method of controlling the temperature of an object comprising (a) providing an upwardly open vessel containing a liquid cryogen, the vessel having vertically continuous inner walls of high thermal conductivity to provide a vertical temperature gradient above the level of liquid cryogen, (b) supporting the object within the container above the liquid cryogen, and sensing a temperature relative to the temperature of the object, and (c) varying the vertical spacing of the object above the liquid cryogen level until the desired temperature is obtained.