The Equipment Standing Between Your Samples and Loss
A ULT freezer is one of those rare pieces of lab equipment for which a malfunction means losing all work that has been done in years in just a matter of hours. It would be impossible to replace cell lines, clinical trials, sequencing libraries, and biobank specimens at any cost, which makes the purchase of ULT freezers among the most analyzed purchases of capital lab equipment. Our Medidepot provides some of the widest range of ULT freezers with 158 options from such manufacturers as Thermo Scientific, PHCbi, So-Low, Eppendorf, Arctiko, Stirling Ultracold, FARRAR, Follett, ScienTemp, Migali Scientific, Liebherr, Accucold, American BioTech Supply, and KoolMore.
That breadth matters because ULT requirements vary enormously between labs. A research group storing a few hundred vials has different needs than a biorepository consolidating a regional sample collection, and a facility with limited electrical capacity has different constraints than one building out a new cold room. Having upright, chest, portable, and stackable formats across capacities from under 1 cu. ft. to over 31 cu. ft. means the specification can follow the actual requirement.
Who Relies on Ultra-Low Storage
ULT freezers serve any organization holding biological materials that degrade at conventional freezer temperatures. This collection is a fit for:
- Research laboratories and academic research departments
- Biobanks and biorepositories managing long-term sample collections
- Pharmaceutical companies storing reference standards and clinical trial materials
- Biotechnology companies maintaining cell lines and reagents
- Hospitals with clinical, pathology, or translational research programs
- Universities running life sciences and biomedical research
- Contract research organizations and specimen processing facilities
Formats, Brands, and What Each Offers
MediDepot’s -86°C ULT collection covers several distinct equipment formats across more than a dozen manufacturers.
Upright ULT Freezers The most common laboratory format, offering the best sample density per square foot of floor space. Thermo Scientific supplies the widest upright range here, including the TSX series in 19.4, 24.1, 28.8, and 33.5 cu. ft. capacities with 3-door configurations (1 outer, 2 inner) and touchscreen LCD options, plus the TDE series with 5-door configurations for greater compartmentalization. PHCbi contributes its TwinGuard dual-cool uprights (MDF-DU302VX-PA at 12.7 cu. ft., MDF-DU502VXC-PA at 18.6 cu. ft.) and VIP ECO natural refrigerant models at 18.6, 25.6, and 25.7 cu. ft. So-Low offers the U80-30 at 30 cu. ft., and Arctiko provides the ULUF P510 MV at 17.5 cu. ft. and ULUF P830 MV at 28.7 cu. ft.
Chest ULT Freezers Chest configurations hold temperature better during door openings because cold air settles rather than spilling out. Options include the PHCbi MDF-DC700VXC-PA TwinGuard at 25.3 cu. ft., the PHCbi VIP ECO Compact in 3.0 and 6.4 cu. ft., Thermo Scientific’s TDEC25286LA at 13 cu. ft. and TDEC06386FA pharmaceutical chest freezer at 3 cu. ft., and the Accucold LAB8R6 at 3 cu. ft. with ETL listing.
Eppendorf CryoCube Series A dedicated upright line spanning four capacity tiers: the F101h at 101 L (3.6 cu. ft.), F440h and F440n at 440 L (15.5 cu. ft.), F570h and F570n at 570 L (20.1 cu. ft.), and the F740h, F740hi, and F740hiw at 740 L (26.1 cu. ft.), all rated -50°C to -86°C.
Portable and Stackable Units The Stirling Ultracold ULT25NEU portable freezer at 0.9 cu. ft. supports sample transport and point-of-use storage, while the KoolMore KM-PHF-4CUL stackable ULT at 4 cu. ft. suits labs building capacity vertically in constrained spaces.
Backup and Access Control Options Several Thermo Scientific TSX models are available with factory-installed backup and security features, including LN2 backup systems (TSX70086FARAKLN, TSX50086FARAKLN), CO2 backup (TSX40086FARAKCO), HID/NFC access card readers (TSX70086FARAKHID, TSX50086FARAKHID), and illumination kits.
Specialty Configurations The collection also includes explosion proof units, ultra low chambers, a controlled rate chamber, and temperature monitoring equipment, alongside FARRAR, Follett, ScienTemp Corporation, Migali Scientific, and Liebherr offerings.
Upright vs. Chest: A Direct Comparison
| Factor | Upright ULT | Chest ULT |
|---|---|---|
| Floor space efficiency | Higher storage density per square foot | Lower density, larger footprint |
| Temperature stability on opening | Cold air spills out when door opens | Cold air settles, better retention |
| Sample access | Easier to reach and organize by shelf | Requires lifting and digging to reach lower layers |
| Inner door compartments | Common (2 to 4 inner doors) | Typically single top-load access |
| Typical capacities here | 12.7 to 33.5 cu. ft. | 3 to 25.3 cu. ft. |
| Best-fit use | High-volume labs with frequent access | Long-term archival, power-outage resilience |
Working Through Your Specification
With this many options, narrowing systematically saves time and prevents costly mistakes.
- Capacity versus growth. Options span under 1 cu. ft. through 31+ cu. ft. Size for your current inventory plus realistic growth, since migrating a full collection to a larger unit later carries genuine risk.
- Upright or chest. Choose upright for access frequency and floor space efficiency, chest for temperature stability and archival storage.
- Temperature range. This collection includes ranges such as -86°C to -50°C, -86°C to -25°C, -40°C to -86°C, and -20°C to -80°C. Confirm the range covers your materials’ documented requirements.
- Backup redundancy. For irreplaceable collections, consider models with factory-installed LN2 or CO2 backup rather than relying solely on facility generator coverage.
- Refrigerant and energy profile. PHCbi VIP ECO and FrostLess models use natural refrigerants, and several units carry ENERGY STAR certification, which affects both operating cost and facility sustainability targets.
- Access control needs. Biorepositories and regulated environments may require HID/NFC card reader access, available factory-installed on select Thermo Scientific models.
- Electrical supply. Confirm voltage before ordering. This collection includes 115V, 220V, dual voltage, and universal voltage configurations.
- Inner door count. More inner doors mean less warm air intrusion when retrieving a single box, which matters in high-traffic freezers.
Specifications and Facility Requirements
ULT freezers in this collection vary widely by manufacturer and format. Documented details available on the collection page include:
| Category | Detail |
|---|---|
| Capacity range | Under 1 cu. ft. through 31+ cu. ft. |
| Temperature ranges | Includes -86°C to -50°C, -86°C to -25°C, -40°C to -86°C, -20°C to -80°C |
| Door type | Solid (all units) |
| Door quantity | Single (majority) or double outer doors |
| Inner door configurations | 2 to 4 inner doors on select upright models |
| Voltage options | 115V, 220V, dual voltage, universal voltage |
| Backup options | LN2 or CO2 backup on select Thermo Scientific models |
Buyers should confirm current compressor configuration, alarm specifications, heat output, electrical requirements, and any applicable certifications directly on each product page before ordering, since these differ substantially between manufacturers and models. MediDepot does not represent that any unit satisfies a specific facility’s regulatory, accreditation, or biorepository accreditation requirements; laboratory and facilities managers should verify equipment against their own institutional standards and validate performance before placing samples into service.
Protecting a Long-Term Investment
A ULT freezer typically stays in service for a decade or more and carries significant operating costs, which changes how the purchase should be evaluated.
- Budget beyond the purchase price. ULT freezers draw substantial power and generate significant heat, so electricity and any added HVAC load belong in your total cost of ownership calculation.
- Plan redundancy before you need it. Whether through a backup unit, LN2 or CO2 backup systems, or generator coverage, decide how your facility handles a failure while samples are still safe.
- Verify facility infrastructure early. Confirm electrical capacity, room ventilation and cooling, floor loading, and doorway clearances before delivery, particularly for 28 to 33 cu. ft. units.
- Standardize where practical. Running units from the same manufacturer simplifies alarm familiarity, staff training, service contracts, and spare parts.
- Factor in monitoring. Continuous temperature monitoring with alarm escalation is standard practice for irreplaceable collections and should be planned alongside the freezer purchase.
Frequently Asked Questions
What is the difference between an upright and a chest ULT freezer?
Upright ULT freezers store samples on shelves behind a front door, offering higher storage density per square foot and easier organized access, often with 2 to 4 inner doors that limit warm air intrusion. Chest ULT freezers load from the top, so cold air settles rather than spilling out when opened, generally giving better temperature stability at the cost of floor space and access convenience.
What temperature range do I actually need?
Match the range to your stored materials’ documented requirements. This collection spans several ranges including -86°C to -50°C, -86°C to -25°C, and -40°C to -86°C. Materials such as cell lines, plasmids, and certain clinical samples typically call for -80°C storage, but you should confirm requirements against your own protocols.
Do I need a freezer with LN2 or CO2 backup?
Backup systems maintain low temperature if the primary refrigeration fails, which matters most for irreplaceable collections. Select Thermo Scientific TSX models are available with factory-installed LN2 backup (TSX70086FARAKLN, TSX50086FARAKLN) or CO2 backup (TSX40086FARAKCO). Facilities with reliable generator coverage and a backup unit may not require it.
How much electrical capacity does a ULT freezer require?
Requirements vary by model and capacity. This collection includes 115V, 220V, dual voltage, and universal voltage configurations. Confirm the specific voltage, amperage, and outlet type on the product page, and have facilities or biomedical engineering verify your room’s available circuit capacity before delivery.
Why do some ULT freezers use natural refrigerants?
Natural refrigerant models, such as PHCbi’s VIP ECO and FrostLess lines, use refrigerants with lower global warming potential than conventional alternatives. Labs often select these to meet institutional sustainability targets, and several models are also positioned as energy efficient or ENERGY STAR certified, which reduces operating cost.
What should I do before placing samples in a newly delivered ULT freezer?
Most facilities run the unit empty to confirm it reaches and holds its target temperature, verify alarm function, and connect continuous monitoring before loading samples. Follow the manufacturer’s startup guidance and your own institution’s equipment validation protocol rather than loading immediately on delivery.
Find the Right ULT Freezer for Your Collection
With 158 configurations spanning format, capacity, backup options, and refrigerant type, comparing candidates side by side before ordering is worth the time, especially when the samples going inside cannot be replaced. MediDepot offers Medical Equipment Financing to help spread the cost of a major cold storage purchase, along with a Price Match Guarantee so you can order with confidence. Extended Warranty coverage is available on eligible equipment for labs that want protection beyond standard manufacturer terms, and a Military Discount is available for qualifying buyers. Browse the full -86°C ULT Freezers collection above, or contact the MediDepot team to discuss capacity, redundancy, and facility requirements for your lab.
