Liquid Nitrogen Freezer Temperature

In its basic form a liquid nitrogen freezer is.

Liquid nitrogen freezer temperature.

Each freezer isn t completely filled with liquid nitrogen for a few reasons. 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. Over this temperature range liquid nitrogen looks much like boiling water. At normal atmospheric pressure nitrogen is a liquid between 63 k and 77 2 k 346 f and 320 44 f.

The cellular structure isn t completely destroyed preventing complete lost of moisture. Below 63 k it freezes into solid nitrogen. The temperature of liquid nitrogen is 190 c but the vapor keeps the tank colder than 170 c which is still good enough to keep all of the proteins in these cells completely inactive. Mve stock provides the ultimate in security for the breeding industry and are primarily used to store semen and embryos.

However if the liquid nitrogen contacts the cellular formation the content will be damaged and become unusable. Liquefied gases such as liquid nitrogen and liquid helium are used in many cryogenic applications liquid nitrogen is the most commonly used element in cryogenics and is legally purchasable around the world. First it would be really expensive but more importantly it isn t necessary. Liquid nitrogen ln 2 is nitrogen in a liquid state at low temperature 195 79 c 77 k.

A constant temperature allows for vapor storage throughout the freezer at near liquid nitrogen temperatures. 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. Because liquid nitrogen in a usual setting is boiling its usual temperature is 77 k. These liquids may be stored in dewar flasks which are double walled containers with.

Liquid helium is also commonly used and allows for the lowest attainable temperatures to be reached.