Liquid Nitrogen Refrigerators PurityPlus® offers liquid nitrogen refrigerators in a variety of models and dimensions. These products act as a cryogenic refrigerator for LSI nitrogen refrigerated liquid and other cryogenic liquids. Cryogenic refrigerators allow for long-term storage of cryogenic materials at the proper temperature. The several models of liquid nitrogen refrigerators offered by PurityPlus® can vary in dimension, height, weight, canister diameter, capacity, hold time, work time, evaporation rate, and more. To learn more about the various liquid nitrogen refrigerators offered by PurityPlus®, browse our Cryogen Refrigerator catalog page, locate your nearest PurityPlus® provider, or speak with a specialist by calling 877-81P-PLUS (877-817-7587).