Ultra-low freezer

Right fit. Right partner. Right choice.
Thermo Scientific -80°C lab freezers, also known as ultra-low freezers (ULT), are designed first and foremost to protect samples. They're also designed to maximize storage capacity by offering a range of upright and chest models to accommodate a variety of laboratory footprint requirements. Additional features include energy-savings models that meet today's sustainability demands. Protect your samples with the right, energy-efficient ultra-low temperature freezers; choose from our premium TSX, advanced or standard performance platforms.

Use our ULT selection guide, browse through our portfolio below, or ask one of our experts to help tailor a solution specific to your needs.

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Which kind of ULT freezer best fits your needs?


Standard performance ultra-low freezers

Advanced ultra-low freezers

Premium (TSX) ultra-low freezers

  ”standard ULT freezer ”advanced ULT freezer ”premium ULT freezer
  Dependable sample storage is our standard. Choose an ultra-low temperature freezer designed specifically for reliability. Exceptional performance for everyday assurance. Protect your precious samples and reduce your energy costs with an ultra-low temperature freezer that's built to last. Peace of mind protection for precious samples. Because your focus should be your discoveries. Our focus is keeping them safe. Our TSX ultra-low temperature freezers provide prime protection, even in the most taxing conditions.
Daily energy consumption  as low as 12.0 kWh/day as low as 9.1 kWh/day as low as 7.9 kWh/day
Door opening recovery as low as 19 min as low as 11 min as low as 17 min
Heat rejection (HVAC load) Medium Low Lowest
Sound Normal Quiet Most quiet
Cooling technology 2-stage cascade compressor 2-stage cascade compressor 2-stage variable speed compressors 
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System refrigerants HFC1 Natural HC2 Natural HC2
Upright freezer storage capacity 240–600 boxes3 300–600 boxes3 400–700 boxes3
User interface Microprocessor control Touchscreen Touchscreen
Certifications UL, cUL, CE, RoHS, xFDA4 UL, cUL, CE, RoHS UL, cUL, CE, RoHS
Outer doors Single and Double Single Single
U.S. EPA SNAP compliant  
EU F-Gas compliant  
Chest freezers    
Soft grip handle    
Thin wall high density storage  
On-board event/temp. recording  
Cloud connected  
Remote monitoring compatible
Access/user setting controls
USB port for data download  
Setpoint security
Access key/card control options  
  Explore standard performance ULTs Explore advanced ULTs Explore premium TSX ULTs
  1. Hydrofluorocarbon (HFC) refrigerants: legacy refrigerants, higher global warming potential (GWP)
  2. Natural hydrocarbon (HC) refrigerants: Environmentally friendly, low global warming potential (GWP), SNAP approved.
  3. 2-inch (5cm) high boxes
  4. xFDA certification in various countries. Example: FDA Class 1-US, CFDA-China


Introducing the DeviceLink Hub wireless monitoring solution


Cryogenic storage

Matrix storage (Barcoded tubes)

Cryo extra sample prep
Matrix Tubes

Standard storage tubes

Racks, boxes and accessories

Externally threaded universal tubes
Freezer racks and boxes

How-to freezer videos