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Cryo Chiller is an ISS EXPRESS rack mounted payload designed for the rapid freezing of biological samples aboard the International Space Station (ISS). Cryo Chiller arrived on ISS as part of the Cygnus NG-11 commercial resupply mission in 2019.  


  • Cartridge volume over 3 liters for larger experiments/biosamples
  • Permanently EXPRESS rack mounted
    • Minimizes crew and ops time for experiments
    • Provides flexibility for extended term sample storage
  • Local & Remote (Ground) Control and Monitoring
  • System heat rejection via rack Avionics Air Assembly