Liquid Nitrogen N2 Freezer

Liquid nitrogen ln 2 is nitrogen in a liquid state at low temperature 195 79 c 77 k.

Liquid nitrogen n2 freezer.

Rely on liquid nitrogen to freeze your samples with a wide lab freezer from custom biogenic systems. The mean time between failures are another reason to use liquid nitrogen cooled vessels rather than freezers to store biological samples. A tank of liquid nitrogen used to supply a cryogenic freezer for storing laboratory samples at a temperature of about 150 c controlled rate and slow freezing also known as slow programmable freezing spf 15 is a set of well established techniques developed during the early 1970s which enabled the first human embryo frozen birth zoe leyland during 1984. Lift open the wide lid to access the perfectly arranged racks.

320 f boiling point at sea level it is produced industrially by fractional distillation of liquid air it is a colorless low viscosity liquid that is widely used as a coolant. Modern vapor phase liquid nitrogen freezers are so well insulated that the sample space temperature is maintained at or below 190 c even if the lid is kept off. In applications where storage temperatures above 150 c are acceptable laboratory personnel have had to accept these tradeoffs between usability and reliability in selecting among conventional mechanical and cryogenic refrigeration. It is a colourless clear liquid with a density of 0 807 g ml at its boiling.

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