Liquid nitrogen (LN2) is a commonly used industrial product that has a variety of uses, including: Cryogenics: LN2 is used in cryogenics for cooling and preserving biological samples, such as blood and tissue, and for superconducting experiments. Food industry: LN2 is used in the food industry for flash freezing, blanching, and to preserve food products. Medical: LN2 is used in medical applications for cryotherapy and to preserve vaccines and other biological products. Research: LN2 is used in scientific research for cooling and preserving samples, as well as for experiments that require low temperatures. Cryogenic grinding: LN2 is used in cryogenic grinding to grind tough and heat-sensitive materials into fine powders. Welding: LN2 is used in welding as a cooling agent to prevent warping and cracking of materials. Shrinking metal: LN2 is used in metal fabrication to shrink metal components, such as fittings and pipes, for a tight fit. Art conservation: LN2 is used in art conservation to clean and preserve delicate objects, such as sculptures and paintings.