Nitrogen is used primarily for blanketing volatile chemicals in the industrial market. Liquid nitrogen, a cryogenic liquid, is used primarily as a refrigerant. It is used in medical research, and can be used to keep the essence of a cell alive while it is being studied. (At the xenters for Disease Control and Prevention in Atlanta, for example, liquid nitrogen is being used in the study of the AIDS virus.
EspriGas Welding Gas Refill, Nitrogen Gas, 80 cu-ft Capacity, Odorless, -195.8 deg C Boiling, 52 deg C Storage, 0.967 Vapor Density, -210 deg C Melting Point, Colorless