Polar is a research refrigerator designed and developed by University of Alabama at Birmingham (UAB) Center for Biophysical Sciences and Engineering (CBSE) for NASA Cold Stowage.
Polar was designed as a single mid-deck locker equivalent[further explanation needed] payload to store scientific samples on-board ISS and in transport to/from ISS via SpaceX Dragon or Cygnus spacecraft.
Polar operates between 4 and −95 °C (39 and −139 °F).
[1][2] Polar is one of multiple units available for storage on the ISS and/or transportation to and from the ISS.
Others include: