
Ultra Low Temperature Freezers
Also known as minus eighty freezers, a specialized category of laboratory freezer to maintain temperatures from –20°C to –80°C.
How Are Ultra-Low Temperature Freezers Used?
Ultra-low temperature (ULT) conditions can be critical for safe sample and reagent storage. ULT freezers typically cool to temperatures between −50°C and −80°C, which are significantly lower than standard freezer temperatures.
ULT freezers are essential items of equipment in many laboratories, especially those that require the safe and secure short- or long-term storage of materials such as vaccines or temperature-sensitive biological samples, including DNA, RNA, viruses, sera, and proteins.
ULT freezers are offered as vertical units, horizontal chest units, or under-bench units in a range of sizes and capacities up to 900 L or more. Small, compact portable benchtop models, typically 25 L, are also available and are a good option for personal use.
Most ULT freezers are built from robust and durable materials such as stainless steel, aluminum, or powder-coated sheet steel. Customizable internal storage layouts or compartments are also available. For example, they may have combinations of adjustable and exchangeable doors, shelves, baskets, and trays. Special racking systems, designed for storing cryogenic boxes, vial storage systems, or cryotubes, can also be purchased as accessories.
Available Features
• Energy-efficient, microprocessor-controlled systems
• Digital, user-friendly touchscreen displays
• Lockable, card-entry or self-closing doors for sample security
• Over-temperature alarms
• Remote temperature monitoring with USB download
• Inner doors and high-efficiency foam insulation to minimize temperature losses
• High-efficiency pump systems for faster cool-down times
• Back-up systems for power or mechanical failures
• Refrigerants that comply with the U.S. Environmental Protection Agency (EPA) Significant New Alternatives Policy (SNAP) program, European Union F-gas regulations, or other regulatory program requirements
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Filtered Search Results

Thermo Scientific™ TSX ultra-low freezer package with racks, boxes and chart recorder
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
TSX ultra-low freezer package with racks, boxes and factory-installed chart recorder
Insulation | Water-Blown Polyurethane Foam |
---|---|
Type | Ultra-Low Freezer, Upright |
Shelves | 3 |
Compressor | V-drive |
Style | Upright |
Temperature Range | -50°C to -86°C |
Interior | Stainless Steel |
Certifications/Compliance | EPA SNAP |
Monitoring Options | Alarm, Recorder |
Thermo Scientific™ TDE Series Ultra-Low Temperature Freezers

Thermo Scientific™ TDE Series ultra-low temperature freezers feature reduced energy usage, a simplified touchscreen interface, four capacities, and an ergonomic cabinet design.
Thermo Scientific™ TDE Series Ultra-Low Temperature Freezers

Thermo Scientific™ TDE Series ultra-low temperature freezers feature reduced energy usage, a simplified touchscreen interface, four capacities, and an ergonomic cabinet design.
Thermo Scientific™ TDE Series Ultra-Low Temperature Freezers

Thermo Scientific™ TDE Series ultra-low temperature freezers feature reduced energy usage, a simplified touchscreen interface, four capacities, and an ergonomic cabinet design.
Thermo Scientific™ TSX Core Series General Purpose Ultra-Low Freezer Package with Racks and Cryoboxes
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More

Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
TSX™ Core Series is engineered for reliability and designed for everyday use. When choosing a ULT, protecting your samples is the top priority.
Voltage Compensation | ±10% |
---|---|
Phase | Single |
Plug Type | NEMA 5-15 P |
Door Style | Outer (1), Inner (2) |
Refrigerant | R290 (1st stage), R170 + R290 mix (2nd stage) |
Height (English) Exterior | 78.0 in. |
Interior | Optional Stainless Steel |
Access Security | Standard Key Lock, Padlock Loop, Setpoint and Settings Security |
Height (Metric) Exterior | 198.1 cm |
Water Cooled | Not Available |
Depth (Metric) Interior | 71.9 cm |
Voltage | 100/230 V |
Defrost | Manual |
Shelves | 3 Adjustable, 1 Fixed |
Amperage | 8.9-4.9 A |
Style | Upright |
Depth (Metric) Exterior | 97.8 cm |
No. of Doors | 1 |
Certifications/Compliance | cULus,CE,ENERGYSTAR,EPA SNAP |
Exterior Finish | Painted Cold Rolled Steel |
Height (English) Interior | 51.2 in. |
Data Outputs | 4-20mA, Dry Contacts, RS485, USB |
Insulation | Vacuum Insulation Panels (VIP) and Water-Blown Polyurethane Foam (SNAP-compliant) |
Electrical Requirements | 100/230 V, 50/60 Hz |
Warranty | Warranty varies by country, please contact us for details |
Height (Metric) Interior | 130.0 cm |
Chamber Material | Cold-rolled Steel |
Backup Systems | Not included |
Cabinet Material | Scratch-resistant Painted Steel |
Compressor | V-drive |
Ports | 2 Rear Access Ports |
Temperature Stability | 0.2°C |
Green Features | ENERGY STAR, ACT |
Monitoring Options | Audible and Visual High and Low Temperature Alarms |
Depth (English) Exterior | 37 in. |
Type | Ultra-Low Freezer, Upright |
ACT Label | Yes |
Setpoint Security | Passcode Access Control |
Casters | 4 All-Direction Casters with Locks |
Connectivity | Thermo Scientific™ Instrument Connect Compatible with Accessory |
Temperature Range | -50°C to -86°C |
Depth (English) Interior | 28.3 in. |
Product Line | TSX Core Series |
Display | 7-segment Display with Capacitive Touch Screen Buttons |
Temperature Resolution | 1°C |
Thermo Scientific™ TSX Universal Series Ultra-Low Freezer package with Racks, Boxes, and Exterior Illumination Kit
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More


Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
The new TSX Universal Series ULT freezers herald a new era in performance, delivering an expanded setpoint range, tighter control, and faster recovery time. Coupled with universal voltage, whisper-quiet operation, and ENERGY STAR certification, TSX Universal seamlessly adapts to your workflow.
Electrical Requirements | 100/230 V, 50/60 Hz |
---|---|
Plug Type | NEMA 5-15 |
Door Style | Solid, Hinged |
Chamber Material | Stainless Steel |
Voltage | 100/230 V |
Shelves | 3 Adjustable, 1 Fixed |
Cabinet Material | Cold-rolled Steel |
Compressor | V-drive |
Style | Upright |
Temperature Range | -40°C to -86°C |
No. of Doors | 1 |
Certifications/Compliance | ENERGYSTAR,EPA SNAP,cULus,CE |
Monitoring Options | Audible and Visual High and Low Temperature Alarms, Wireless |
Thermo Scientific™ TSX Core Series General Purpose Ultra-Low Freezer Package with Racks and LN2 Backup System
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More

Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
TSX™ Core Series is engineered for reliability and designed for everyday use. When choosing a ULT, protecting your samples is the top priority.
Voltage Compensation | ±10% |
---|---|
Phase | Single |
Plug Type | NEMA 5-15 P |
Door Style | Outer (1), Inner (2) |
Refrigerant | R290 (1st stage), R170 + R290 mix (2nd stage) |
Height (English) Exterior | 78.0 in. |
Interior | Optional Stainless Steel |
Access Security | Standard Key Lock, Padlock Loop, Setpoint and Settings Security |
Height (Metric) Exterior | 198.1 cm |
Water Cooled | Not Available |
Depth (Metric) Interior | 71.9 cm |
Voltage | 100/230 V |
Defrost | Manual |
Shelves | 3 Adjustable, 1 Fixed |
Amperage | 8.9-4.9 A |
Style | Upright |
Depth (Metric) Exterior | 97.8 cm |
No. of Doors | 1 |
Certifications/Compliance | cULus,CE,ENERGYSTAR,EPA SNAP |
Exterior Finish | Painted Cold Rolled Steel |
Height (English) Interior | 51.2 in. |
Data Outputs | 4-20mA, Dry Contacts, RS485, USB |
Insulation | Vacuum Insulation Panels (VIP) and Water-Blown Polyurethane Foam (SNAP-compliant) |
Electrical Requirements | 100/230 V, 50/60 Hz |
Warranty | Warranty varies by country, please contact us for details |
Height (Metric) Interior | 130.0 cm |
Chamber Material | Cold-rolled Steel |
Backup Systems | LN2 |
Cabinet Material | Scratch-resistant Painted Steel |
Compressor | V-drive |
Ports | 2 Rear Access Ports |
Temperature Stability | 0.2°C |
Green Features | ENERGY STAR, ACT |
Monitoring Options | Audible and Visual High and Low Temperature Alarms |
Depth (English) Exterior | 37 in. |
Type | Ultra-Low Freezer, Upright |
ACT Label | Yes |
Setpoint Security | Passcode Access Control |
Casters | 4 All-Direction Casters with Locks |
Connectivity | Thermo Scientific™ Instrument Connect Compatible with Accessory |
Temperature Range | -50°C to -86°C |
Depth (English) Interior | 28.3 in. |
Product Line | TSX Core Series |
Display | 7-segment Display with Capacitive Touch Screen Buttons |
Temperature Resolution | 1°C |
Thermo Scientific™ TDE Series Ultra-Low Temperature Freezers

Thermo Scientific™ TDE Series ultra-low temperature freezers feature reduced energy usage, a simplified touchscreen interface, four capacities, and an ergonomic cabinet design.
Thermo Scientific™ TSX Universal Series Ultra-Low Freezer package with Racks, Boxes, and Access Key
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More


Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
The new TSX Universal Series ULT freezers herald a new era in performance, delivering an expanded setpoint range, tighter control, and faster recovery time. Coupled with universal voltage, whisper-quiet operation, and ENERGY STAR certification, TSX Universal seamlessly adapts to your workflow.
Electrical Requirements | 100/230 V, 50/60 Hz |
---|---|
Plug Type | NEMA 5-15 |
Door Style | Solid, Hinged |
Chamber Material | Stainless Steel |
Voltage | 100/230 V |
Shelves | 3 Adjustable, 1 Fixed |
Cabinet Material | Cold-rolled Steel |
Compressor | V-drive |
Style | Upright |
Temperature Range | -40°C to -86°C |
No. of Doors | 1 |
Certifications/Compliance | ENERGYSTAR,EPA SNAP,cULus,CE |
Monitoring Options | Audible and Visual High and Low Temperature Alarms, Wireless |
Thermo Scientific™ TDE Series Ultra-Low Temperature Freezers

Thermo Scientific™ TDE Series ultra-low temperature freezers feature reduced energy usage, a simplified touchscreen interface, four capacities, and an ergonomic cabinet design.
Thermo Scientific™ TDE Series Ultra-Low Temperature Freezers

Thermo Scientific™ TDE Series ultra-low temperature freezers feature reduced energy usage, a simplified touchscreen interface, four capacities, and an ergonomic cabinet design.
Thermo Scientific™ TDE Series -40°C Ultra-Low Temperature Freezer Package with Racks and Boxes

TDE -40°C ultra-low temperature freezer package includes one ULT freezer and two shelves of sliding drawer racks and boxes.
Insulation | Water-Blown Polyurethane Foam |
---|---|
Door Style | Outer (1), Inner (4) |
Shelves | 2 |
Compressor | H-drive |
Style | Upright |
Temperature Range | -10°C to -40°C |
Interior | Stainless Steel |
No. of Doors | 5 |
Monitoring Options | Alarm, Recorder |
Thermo Scientific™ TSX ultra-low freezer package with racks and boxes

TSX ultra-low freezer package with racks and boxes
Insulation | Water-Blown Polyurethane Foam |
---|---|
Type | Ultra-Low Freezer, Upright |
Shelves | 3 |
Compressor | V-drive |
Style | Upright |
Temperature Range | -50°C to -86°C |
Interior | Stainless Steel |
Certifications/Compliance | EPA SNAP |
Monitoring Options | Alarm, Recorder |
Thermo Scientific™ TSX Core Series General Purpose Ultra-Low Freezer Package with Racks and CO2 Backup System
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More

Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
TSX™ Core Series is engineered for reliability and designed for everyday use. When choosing a ULT, protecting your samples is the top priority.
Voltage Compensation | ±10% |
---|---|
Phase | Single |
Plug Type | NEMA 5-15 P |
Door Style | Outer (1), Inner (2) |
Refrigerant | R290 (1st stage), R170 + R290 mix (2nd stage) |
Height (English) Exterior | 78.0 in. |
Interior | Optional Stainless Steel |
Access Security | Standard Key Lock, Padlock Loop, Setpoint and Settings Security |
Height (Metric) Exterior | 198.1 cm |
Water Cooled | Not Available |
Depth (Metric) Interior | 71.9 cm |
Voltage | 100/230 V |
Defrost | Manual |
Shelves | 3 Adjustable, 1 Fixed |
Amperage | 8.9-4.9 A |
Style | Upright |
Depth (Metric) Exterior | 97.8 cm |
No. of Doors | 1 |
Certifications/Compliance | cULus,CE,ENERGYSTAR,EPA SNAP |
Exterior Finish | Painted Cold Rolled Steel |
Height (English) Interior | 51.2 in. |
Data Outputs | 4-20mA, Dry Contacts, RS485, USB |
Insulation | Vacuum Insulation Panels (VIP) and Water-Blown Polyurethane Foam (SNAP-compliant) |
Electrical Requirements | 100/230 V, 50/60 Hz |
Warranty | Warranty varies by country, please contact us for details |
Height (Metric) Interior | 130.0 cm |
Chamber Material | Cold-rolled Steel |
Backup Systems | CO2 |
Cabinet Material | Scratch-resistant Painted Steel |
Compressor | V-drive |
Ports | 2 Rear Access Ports |
Temperature Stability | 0.2°C |
Green Features | ENERGY STAR, ACT |
Monitoring Options | Audible and Visual High and Low Temperature Alarms |
Depth (English) Exterior | 37 in. |
Type | Ultra-Low Freezer, Upright |
ACT Label | Yes |
Setpoint Security | Passcode Access Control |
Casters | 4 All-Direction Casters with Locks |
Connectivity | Thermo Scientific™ Instrument Connect Compatible with Accessory |
Temperature Range | -50°C to -86°C |
Depth (English) Interior | 28.3 in. |
Product Line | TSX Core Series |
Display | 7-segment Display with Capacitive Touch Screen Buttons |
Temperature Resolution | 1°C |
Thermo Scientific™ TSX Universal Series Ultra-Low Freezer package with Racks, Boxes, and CO2 Back-up System
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More


Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
The new TSX Universal Series ULT freezers herald a new era in performance, delivering an expanded setpoint range, tighter control, and faster recovery time. Coupled with universal voltage, whisper-quiet operation, and ENERGY STAR certification, TSX Universal seamlessly adapts to your workflow.
Electrical Requirements | 100/230 V, 50/60 Hz |
---|---|
Plug Type | NEMA 5-15 |
Door Style | Solid, Hinged |
Chamber Material | Stainless Steel |
Voltage | 100/230 V |
Shelves | 3 Adjustable, 1 Fixed |
Cabinet Material | Cold-rolled Steel |
Compressor | V-drive |
Style | Upright |
Temperature Range | -40°C to -86°C |
No. of Doors | 1 |
Certifications/Compliance | ENERGYSTAR,EPA SNAP,cULus,CE |
Monitoring Options | Audible and Visual High and Low Temperature Alarms, Wireless |