Liquid Nitrogen is a refrigerated liquefied gas with a boiling point of -196° C

In its liquid form Nitrogen is used as a cryogen for many applications where very low temperatures or rapid temperature reduction is required.
Nitrogen can also be used as a component in many gas medical mixtures such as lung function test gases.

Nitrogen, compliant with the European pharmacopeia monograph for low oxygen nitrogen, is used as an inert gas for the storage of medicinal products that are susceptible to oxidation in the presence of air.

Nitrogen is also used as a purging and inerting gas by the pharmaceutical industry in the manufacture of medicinal products.
The cold temperature of liquid nitrogen can be used to safely store medical or research samples such as blood, stem cells and plasma.