Ultra-Low Temperature Freezers

Cold, hard confidence for your samples.

For over 80 years, Thermo Fisher Scientific has been a trusted leader in ultra-low temperature (ULT) freezers, providing a comprehensive range of cold storage laboratory solutions engineered to protect the integrity of critical biological samples. Our -80°C and -40°C ULT freezers set the industry standard, delivering unmatched reliability and confidence to researchers worldwide. Beyond reliability, we're committed to innovation, continually pushing the boundaries to design cutting-edge solutions.


With decades of expertise and global collaboration, our ULT freezers incorporate the latest advancements in energy efficiency, sustainability, and storage optimization. Designed for user-friendly operation and ergonomic functionality, our freezers support your seamless research endeavors.


Designed from the bottom up for your applications.

Dependable and quality-assured

We prioritize reliable, high-quality lab equipment to support your research. Rigorously tested in field and laboratory environments and backed by industry-leading warranties.

Trusted performance and protection

With the fastest door open recovery (DOR) in the industry, our ULTs ensure your samples spend more time at optimal storage temperature, even in the most challenging lab equipments.

Greener by design

Our Design for Sustainability (DfS) approach, focused on 5 key impact areas, helps us understand and minimize the environmental impact of our products and packaging —from design to end of life. We call it the Greener by design program.

Future-ready for the connected lab

Our ULT freezers are enabled with cloud-based connectivity that affords your lab remote equipment monitoring and data analysis capabilities, collaboration tools, scientific analysis apps and more.

Optimized sample storage configuration

Standardized rack, tray, and box storage accessories optimize the amount of samples you can store in a square foot of space, while enabling better organization and ease of use.

Choose a ULT ideal for your lab

With over 100 unique ULT models that include a wide variety of sizes, features, and performance characteristics- we design our products with your applications in mind.