Custom Biogenic Systems Isotherm V5000B large liquid nitrogen vapor storage system. Enables users to store more biological materials at liquid-nitrogen temperature. Provides storage temperature in the -190 degrees C range. Features a digital autoâ€“fill/monitoring control for efficient and safe operation. Exterior dimensions of 47â€ diameter x 52â€ deep. Blood bag capacity (50 ml) of 1,936 or vial capacity (2ml) of 40,300. Unit cost over $23,000 new.