Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost Overview
The Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost (model ULF401U) is an upright laboratory ultra-low freezer from Yamato Scientific, supplied by LabSupplies.com as an authorized dealer. Rated from -40°C to -85°C with 370 L (13 cu.ft.) of storage, this unit holds cell lines, plasma, vaccines, and reagents at deep-cold setpoints.
Chamber walls use 14-gauge zinc-coated galvanized steel, while the exterior is 16-gauge steel finished in power-coated cool gray. A cascade refrigeration system pairs two hermetic compressors with CFC-free R-508B and R-404A refrigerants. Air-cooled condensing with two heavy-duty fans removes any need for liquid coolant.
Power options span 115V, 208V, and 230V at 60 Hz single-phase, plus a 220V 50/60 Hz configuration. Exterior dimensions measure 35" × 34.5" × 79.5", and shipping weight reaches 850 lbs. Built in the USA and UL Listed, this freezer accepts 15 racks across four adjustable shelves.
Key Features
- Temperature range: -40°C to -85°C with manual defrost across a 370 L / 13 cu.ft. chamber.
- Digital control system: dual display for set point and chamber temperature, scan button for setting, and tamper-proof lockout.
- Cascade refrigeration: two hermetic compressors running CFC-free R-508B and HCFC-free R-404A, with an air-cooled condenser and two heavy-duty fans.
- Alarm system: battery-operated audible and visual alarms, over- and under-temperature settings, silencing switch, battery test switch, and a relay for remote hook-up.
- Power failure recovery: automatic timer system restarts the unit after an outage.
- Storage and access: 15-rack capacity, four adjustable shelves across five compartments, and a 1/2" access port for probes or sampling.
How to Choose the Right Ultra-Low Freezer
Matching an ultra-low freezer to a lab means balancing sample volume, target setpoint, site power, and floor space. Weigh these axes against your protocol .
- Capacity: a 370 L / 13 cu.ft. chamber with 15-rack capacity suits mid-size sample libraries; confirm rack format matches your boxes.
- Temperature range: a -40°C to -85°C range covers most long-term storage of cells, plasma, and reagents; verify your coldest required setpoint.
- Control type: digital control with dual display and tamper-proof lockout protects setpoints in shared labs and audited environments.
- Defrost method: manual defrost keeps the refrigeration circuit simple; plan periodic defrost cycles into your maintenance schedule.
- Voltage: 115V, 208V, 230V, or 220V options let you match existing bench or dedicated circuits; check available amperage at the install site.
- Footprint: exterior dimensions of 35" × 34.5" × 79.5" and 850 lb weight require a load-rated floor and clearance for air-cooled fans.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 13 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 370 L / 13 cu.ft. |
| Rack Capacity | 15 racks |
| Shelving | 4 adjustable shelves (5 compartments) |
| Interior Dimensions | 20" × 22" × 51.25" (50 × 55 × 130 cm) |
| Exterior Dimensions | 35" × 34.5" × 79.5" (88 × 87 × 201 cm) |
| Temperature Control System | Digital control with dual display (set point and chamber temperature); scan button for temperature setting; tamper-proof lockout |
| Refrigeration System | Cascade type — two hermetic compressors |
| Refrigerant | CFC-free R-508B and R-404A (CFC- & HCFC-free) |
| Condenser | Air-cooled with two heavy-duty fans; no liquid coolant required |
| Alarm System | Battery-operated alarm emits an audible and visual signal on mechanical or electrical failure; over- and under-temperature settings, alarm silencing switch, and battery test switch; relay provided for remote alarm hook-up |
| Power Failure Recovery | Automatic timer system restarts the unit after a power failure |
| Electrical Requirements | 115V / 208V / 230V, 60 Hz, 1-phase; 220V, 50/60 Hz, 1-phase |
| Optional Accessories | Chart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves |
| Material | Chamber is 14-ga. Zinc coated galvanized steel. Exterior is 16-ga. steel. Power coated cool gray |
| Country of Origin | USA |
| GTIN (Barcode) | 797059929931 |
| Shipping Weight | 850 lbs |
| Dimensions (L × W × H) | 46 × 43 × 86 in |
| Component Size | 13 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-401U | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every ULF401U ships as a genuine unit backed by the manufacturer warranty. Order directly and our lab-equipment specialists can answer spec questions before you commit.
- Authorized Yamato Scientific dealer: genuine equipment with full manufacturer warranty support.
- In stock: ready to ship from USA inventory.
- Built in the USA: UL Listed construction with documented country of origin.
- Specialist support: dedicated lab-equipment staff for configuration and spec questions.
Frequently Asked Questions
What temperature range does the ULF401U reach?
The ULF401U operates from -40°C to -85°C. A cascade refrigeration system with two hermetic compressors and CFC-free R-508B and R-404A refrigerants delivers and holds these deep-cold setpoints.
What is the storage capacity and interior size?
The chamber holds 370 L / 13 cu.ft. with capacity for 15 racks. Interior dimensions are 20" × 22" × 51.25" (50 × 55 × 130 cm), divided across four adjustable shelves and five compartments.
What power supply does this freezer require?
The unit accepts 115V, 208V, or 230V at 60 Hz single-phase, plus a 220V 50/60 Hz single-phase configuration. Confirm the available voltage and amperage at your install site before ordering.
What materials is the freezer built from?
The chamber uses 14-gauge zinc-coated galvanized steel. Its exterior is 16-gauge steel finished in power-coated cool gray, giving a durable cabinet for demanding lab environments.
Does it have alarms and power-failure protection?
Yes. A battery-operated alarm emits audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, a silencing switch, a battery test switch, and a relay for remote hook-up. An automatic timer system restarts the unit after a power failure.
What are the exterior dimensions and weight?
Exterior dimensions are 35" × 34.5" × 79.5" (88 × 87 × 201 cm) and the unit weighs 850 lbs. Plan for a load-rated floor plus clearance around the air-cooled condenser fans.