Accessories

Stirling Ultraguard™ -70°C Phase Change Material

Safeguard your biological materials from temperature excursions, no matter what, with Stirling Ultraguard.

CryoSolutions Phase Change Material (PCM)
StirlingUltraguard™ PCM blocks

What is Stirling Ultraguard?

Stirling Ultraguard sealed bricks are filled with non-toxic PCM that changes phase at -70°C and is exclusively designed to extend ultra-low temperature (ULT) passive holdover time for up to eight hours when conditioned and placed inside of a ULT25NEU portable ULT freezer.

Now your high-value biological assets can be further protected when unpowered, for longer...

  • If electric power is not available or lost unexpectedly
  • In remote locations where stable, continuous power is unavailable
  • During limited-range transport of temperature sensitive samples
  • For replacing dry ice with a reusable and safer alternative
CryoSolutions PCM ULT25NEU
Phase Change Material brick in use with ULT25NEU mobile ULT freezer.

Combining Stirling Ultraguard with the ULT25NEU supports contingency planning and safe storage of temperature-sensitive biological materials, virtually anywhere and regardless of power, infrastructure, or dry ice availability.

Phase change material (PCM) bricks back up and extend -80°C to -60°C passive holdover time for up to eight hours inside the Stirling Ultracold ULT25NEU portable freezer.

The application of Stirling Ultraguard -70°C Phase Change Material (PCM) explained in the video