We recognize that dependable, high-quality laboratory equipment is crucial to your research success. That’s why our ultra-low temperature (ULT) freezers are meticulously designed to meet the rigorous demands of today’s advanced research facilities. Our dedication to quality assurance is embedded in every step of the ULT development process.

Our commitment to supporting customer needs drives us to continuously refine our processes, empowering our team to deliver exceptional ULT freezers. From initial design to final delivery, reliability is always our top priority.

The SFR Series represents our most durable and advanced design yet, integrating over 30 years of expertise to enhance every component of the system. From the construction of the sealed system and cabinet to the software and electrical architecture, every detail of the SFR Universal ULT platform has undergone thorough testing to meet the highest standards of quality.

Green Shift Technology

The innovative Green Shift Technology in the new SFR Universal Series ULT freezers sets a new standard for performance and energy efficiency. Unlike conventional compressors that switch between full-power and off modes, Green Shift Technology dynamically adjusts compressor speed to ensure optimal cooling while maximizing energy savings.

By refining variable speed compressors, enhancing intelligent algorithms, and optimizing hardware, our Green Shift technology offers superior performance across all aspects compared to the previous SFR Series ULT models.

Optimized Cabinet Design

With over three decades of expertise in ultra-low temperature freezer manufacturing, every detail of our freezer cabinets has been designed for peak performance. We start by selecting only the highest-quality materials. Cabinets are built with galvanized steel or optional stainless-steel interiors, and the stainless steel shelves are reinforced and adjustable to hold up to 65 kilograms each. Smart compartmentalization increases storage capacity and features inner doors that minimize frost buildup and temperature fluctuations. The outer panels are insulated with high-R-value vacuum panels and water-blown foam, while triple-point seals around door apertures ensure airtight closure. Additional features include integrated control panels, easy-access filter compartments, and casters for effortless mobility, all packaged in a design that optimizes storage space and cooling efficiency.

Environmentally Conscious Design

Innovation at Spencers goes beyond functionality—it drives our mission to reduce environmental impact across our products and packaging, from initial design through end of life. By incorporating sustainability principles into each phase of product development, we are able to mitigate environmental impact early on, helping our customers achieve their sustainability goals while advancing research.

Future-Ready Solutions for the Connected Lab

Remote Monitoring

Enhance the security of your samples and simplify asset management with our remote monitoring solutions. Our secure platforms offer comprehensive 24/7 asset tracking, ensuring the integrity of critical samples and materials. With these advanced systems, your lab equipment becomes a vital, data-producing asset, enabling you to work smarter and more efficiently.

Full Capacitive Touch Display

The SFR Universal Series ULT freezers feature an upgraded 7-inch or 10-inch capacitive touch display, providing an enhanced user interface that simplifies freezer interactions and improves overall user experience.

Ergonomic Design

While the reliability of our ULT freezers gives you peace of mind regarding sample preservation, you’ll appreciate the thoughtful design details once you start using the unit. Years of customer feedback and testing have led to the integration of key ergonomic features, including a smooth, easy-to-operate handle, well-balanced doors, and intuitive control panels that are easy to read. Operating below 60 decibels, our SFR Universal ULTs help create a quieter, more comfortable lab environment.

Secure Sample Storage

Our ULT freezers are equipped with doors that are compatible with standard padlocks for added security. When padlocks aren’t practical, our integrated access key system lets you control and monitor access to your samples, allowing you to track who opens the freezer, when, and for how long, ensuring maximum sample security.