Purpose-built for life science applications.
FARRAR® pioneered forced air convection cooling to answer the challenge of preserving and storing biological and tissue donor samples and materials.
Our Ultra-Low Chamber (ULC) Series are the only +2°C to +8°C and -20°C to -80°C (with options for -40°C storage) forced air, ultra-low temperature freezers on the market.

Optimized Footprint
Up to 50% less floorspace vs. standard ULT configurations with up to 8x the capacity depending on the ULC size (one ULC = six ULTs)
Industry’s Fastest Temperature Recovery
Up to 10x faster temperature recovery from door opening helps ensure product integrity
Tight Temperature Uniformity at Any Set Point
No matter the set point, count on better than +/- 3°C even during a defrost cycle
Integrated, Fully Redundant System
Eliminates need for backup freezer or liquid nitrogen system
FARRAR’s Ultra-Low Chamber (ULC) Series freezers can be configured for product/transfer carts, racks, sliding shelves, and pallet storage to provide secure, flexible, efficient, and redundant storage for any cold storage project.




Forced air convection technology affects three critical performance metrics: temperatureuniformity, chamber pull down, and recovery after door openings.
ULC Series freezers actively circulate conditioned air throughout the chamber. The result? FARRAR freezers and freeze/thaw equipment are over 30% more efficient at removing heat1 than the traditional cold-wall heat displacement process.
But we didn’t stop there. Recovery from door openings is critical to helping maintain product integrity. We designed the FARRAR ULC Series with dual refrigeration units, providing full redundancy and allowing chambers to recover to -80°C up to 3 times faster2 than conventional ultra-low technology.
1, 2 Based on internal testing conducted across multiple equipment types. Individual results may vary depending on equipment, configuration, and operating conditions.
LEARN MORE ABOUT COLD-WALL VS. CONVECTION COOLING