Premium ULT freezer

Peace of mind protection for precious samples.
Your focus should be your discoveries. Our focus is keeping them safe. Our premium TSX ultra-low freezers (ULT) provide prime protection of your most precious samples, even in the most taxing conditions. They meet the highest sustainability, temperature management and reliability standards for -80°C and -70°C storage. Powered by V-drive technology, these state-of-the-art, upright freezers provide energy savings of up to 70% without compromising sample protection. They're quiet and enable lower HVAC costs with very low heat ouput.

  • US EPA SNAP and EU F-Gas compliant refrigerants
  • Significant energy savings without compromising sample protection
  • Available in four upright sizes
  • Whisper-quiet operation
  • Meets ultra-tight temperature uniformity requirements
  • Touchscreen puts information at your fingertips

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.

ULT selection guide


Quick links

Choose your premium TSX ULT freezer by capacity and footprint

Make the most of your lab space with a choice of sizes that can hold from up to 400 (2-inch) boxes in a footprint of 7.42 sq. ft. all the way up to 700 (2-inch) boxes in a 11.86 sq. ft. footprint.

  400 Boxes* 500 Boxes 600 Boxes 700 Boxes
  400 box TSX ULT freezer 500 box TSX ULT freezer 600 box TSX ULT freezer 700 box TSX ULT freezer
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Capacity 19.4 cu. ft. (549 liters) 24.1 cu. ft. (682 liters) 28.8 cu. ft. (816 liters) 33.5 cu. ft. (949 liters)
2mL Vial Capacity 40,000 50,000 60,000 70,000
28.3 x 23.1 x 51.2 in
71.9 x 58.8 x 130.1cm
28.3 x 28.8 x 51.2 in
71.9 x 73.0 x 130.1cm
28.3 x 34.4 x 51.2 in
71.9 x 87.3 x 130.1cm
28.3 x 40.0 x 51.2 in
71.9 x 101.6 x 130.1cm
37.6 x 28.3 x 78 in
95.5 x 71.9 x 198.1cm
37.6 x 34.0 x 78 in
95.5 x 86.4 x 198.1cm
37.6 x 39.6 x 78 in
95.5 x 100.6 x 198.1cm
37.6 x 45.2 x 78 in
95.5 x 114.8 x 198.1cm
Shipping Weight 665 lbs. (302kg) 721 lbs. (327kg) 790 lbs. (358kg) 894 lbs. (406kg)

*Box capacity is in terms of 2-inch (5cm) high boxes.


Configure your ultra-low storage solution

Find an ultra-low temperature freezer by walking through a series of selections based on your lab space requirements. A representative will contact you soon with a recommendation.

Find your freezer

What is V-drive technology?

Unlike standard, single-speed compressors that cycle on and off, our V-drive technology runs at variable speeds to adjust cooling performance to the conditions inside and outside of the freezer. It allows the freezer to adjust to factors such as start-up and door openings when a higher compressor speed is needed. When conditions are normal or stable, the drive runs at a lower speed while still protecting your samples.

Adaptive control of the V-drive quickly and efficiently restores set point even during multiple door openings in a busy lab.

V-drive technology chart
Variable Speed Compressors (V-Drive) change speed in response to activity instead of cycling on and off like standard, single-speed compressors.


Featured Smart Note

I've heard that switching to -70°C can reduce energy, but is it safe for my samples?

Learn more about how switching from -80°C to -70°C as a setpoint is perfectly safe for most samples and can reduce energy consumption by up to 30%.

Download Smart Note


Which plug type do I need?

  Standard Plug Type Voltage Hz
NEMA 5-15 115–120 60
NEMA 5-20 115–120 60
NEMA 6-15 208–230 60
Continental EU
230 50

Alternative plugs and cords are available to meet your special needs. Learn more ›


Monitor your sample storage conditions 24/7

In the event of a power or mechanical issue, you need to be notified right away. Our wireless monitoring systems are designed for 24/7 monitoring of your ultra-low freezer's performance along with reporting, remote alarm notification and continuous data collection.

View our wireless monitoring solutions ›


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