Uniquely Portable and Reliable Ultra-Low Temperature Storage
The ULT25NEU is the only truly portable ultra low temperature (ULT) freezer available today for bringing cold chain samples and biological products to patients at clinic remote sites. It provides safe and reliable ULT freezer storage in the field and on the go, so you can:
- The ULT25NEU is available in two package options—ECO and PRO—designed to meet different operational, compliance, and monitoring needs.
- Safely preserve and deliver biologics at the clinical point of patient care, anywhere in the world
- Collect temperature-sensitive samples and specimens at remote locations without the need for dry ice, keeping users safe in confined spaces like a vehicle
- Easily deploy long-term storage of biologic materials, anywhere there is 12V DC or AC power
Temperature control and handling limitations of dry ice storage can risk the viability of your valuable samples in the field, while compressor-based freezers are too unwieldy and unreliable for deployment at remote sites. The revolutionary ULT25NEU ultra-low temperature freezer was designed to solve these problems. With its compact and field-proven, free-piston Stirling engine technology, it brings portable, precisely controlled ULT freezer storage anywhere there is a need for patient care, testing or specimen collection.
But this portability and small footprint does not come with compromise. The ULT25NEU freezer is a 25-liter (0.9 cu. ft.) capacity ULT freezer with the same performance and reliability of our larger undercounter and upright ultra-low temperature freezer models.
ECO Package
Essential ultra-low temperature performance
What’s included:
- ULT25NEU portable ultra-low temperature freezer
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AC and DC power cords
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1-year warranty
Best for:
- Point-of-use or short-term cold storage
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Users who do not require GxP calibration documentation
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Applications where redundant cold storage is readily available
PRO Package
Enhanced protection, monitoring, and peace of mind
What’s included:
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ULT25NEU portable ultra-low temperature freezer
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AC and DC power cords
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3-year warranty
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Certificate of Calibration & Conformance
Best for:
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Regulated environments such as FDA and GxP
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Primary storage for critical samples
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Uses requiring advanced and redundant
Built for Clinical and Health Care Markets
LIGHTWEIGHT AND EASY TO TRANSPORT
Weighing only 46lbs (21kg), the ULT25NEU can easily be transported or shipped anywhere in the world.
REMOTELY MONITOR FREEZER PERFORMANCE
The ULT25NEU is available with a remote monitoring system, combining temperature and system status with secure cloud storage to monitor and track the ULT25NEU status from anywhere 24/7.
PLUG IN ANYWHERE
The ULT25NEU plugs into any 110V–240V outlet, worldwide, and can even run on 12V DC power with an automotive adapter.
OPTIONAL INTEGRATED BACKUP COOLING
Pair ULT25NEU with rechargeable Stirling Ultraguard phase change material to provide 8 hours of storage at -70C, safeguarding your materials when power is not available.
WIDEST TEMPERATURE RANGE
Safely store valuable samples at ultra-low temperatures from -20°C to -86°C.
SMALLEST FOOTPRINT, SURPRISINGLY BIG CAPACITY
The ULT25NEU holds 18 2-inch boxes, or combine the included two removeable storage baskets to customize and safely store syringes, vials, bags, straws or other media.
ULTRA-LOW POWER CONSUMPTION
Designed for space and energy efficiency, the ULT25NEU ultra-low temperature freezer uses less than 2.8 kWh/day at -80°C.
100% NATURAL REFRIGERANTS
All Stirling Ultracold ULT freezers use 100% natural refrigerants with low GWP, complying with refrigerant regulations, such as the Montreal Protocol, across the globe. No special export classifications are required and units can be shipped via air, ground or sea methods without restriction.
DESIGNED FOR TODAY’S NEW ERA OF SCIENTIFIC INNOVATIONS
Built for portability and reliability, the ULT25NEU ultra-low temperature freezer is ideal for providers of regenerative biologics, and related products who need safe, long-term storage of temperature-sensitive samples at multiple remote clinical sites.











