Stirling Ultracold ULT25

Portable ultra-low temperature freezer

Safeguards temperature sensitive samples in the lab and on the move

Providing a stable environment from -86°C to -20°C. Reducing the reliance on dry ice.

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Steady-state temperature

Temperature settings from -20°C to -86°C. Reaches -80°C in 4 hours.

Compact storage

Small footprint, lightweight and easily portable. Holds up to 18 large format racks.

Multiple power options

Use standard mains power in the lab, 12V DC in vehicles, or a generator out in the field.

Wireless monitoring

Track and log temperature data saves to secure cloud storage.


Innovative free-piston Stirling Ultracold engine technology maintains the operating mechanism.

Low maintenance

Optimum performance is sustained by simple routine filter cleaning.