FACTS

Nitrogen gas is odorless, colorless, and tasteless.  When liquid nitrogen evaporates it reduces the oxygen concentration in the air and may act as an asphyxiant in confined spaces.   A person can become unconscious without any warning symptoms.

1. Extreme Cold. The vapor of liquid nitrogen can rapidly freeze skin tissue and eye fluid, resulting in cold burns, frostbite, and permanent eye damage even by brief exposure.
2. Asphyxiation. Liquid nitrogen expands 695 times in volume when it vaporizes and has no warning properties such as odor or color.  Hence, if sufficient liquid nitrogen is vaporized to reduce the oxygen percentage to below […]

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