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Freezers, Laboratory, Cryogenic, Vapor Phase Nitrogen

Definition : Freezers that use liquid nitrogen as the cooling agent and vapor phase nitrogen for storage. Vapor phase nitrogen storage provides a temperature of -140 degrees Celsius (-220 degrees Fahrenheit) that is not as low as liquid nitrogen (-180 degrees Celsius [-292 degrees Fahrenheit]), but decreases the risk of cross-contamination among the stored products compared to freezers using liquid nitrogen immersion. These freezers typically consist of a chamber with two vessels separated by a vacuum space (the inner vessel for the cryogenic fluid and the outer vessel intended to insulate the cryogenic liquid from the environment); automatic level and cryogenic temperature controls; an external container to replenish the cryogenic fluid; a pressure-relief device; and a pressure-control valve. Cells and/or tissues are immersed in the vapor atmosphere above the liquid nitrogen in appropriate containers. Vapor phase nitrogen cryogenic laboratory freezers are used mainly for cell and/or tissue (e.g., ovum, embryo, bone, cornea) storage for extended time periods (typically several years).

Entry Terms : "Vapor Phase Nitrogen Cryogenic Freezers"

UMDC code : 22074

U.S.companies only
Suppress Subsidiary Companies

1-2 of 2 Match(es).

Cytori Therapeutics Inc

Company Type: Parent

Cytori is committed to providing patients and physicians around the world with medical technologies, which harness the potential of adult stem and regenerative cells from adipose tissue. These technologies enable the research and practice of regenerative medicine in a way that, until now, has not been possible. With the introduction of a family of medical devices, we have made a patient's own clinical grade stem and regenerative cells available to them at the point-of-care.

WestAir Gases and Equipment Inc

Company Type: Parent

1-2 of 2 Match(es).


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