Liquid nitrogen - WikipediaLiquid nitrogen is nitrogen in a liquid state at an extremely low temperature. It is a colorless .. Because the liquid-to-gas expansion ratio of nitrogen is 1:694 at 20 °C (68 °F), a tremendous amount of force can be . concrete beam immediately below it, and blow the walls of the laboratory 0.1–0.2 m off their foundations.nitrogen gas laboratory,Dry nitrogen gas: simple laboratory production - IOPscienceJournal of Scientific Instruments. LABORATORY AND WORKSHOP NOTES. Dry nitrogen gas: simple laboratory production. To cite this article: J H Robertson.
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