Upright Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost Overview
The Upright Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost (model ULF601U) is a cascade-refrigeration laboratory freezer from Yamato Scientific, available through LabSupplies.com, authorized dealer. Each unit holds 626 L (22 cu.ft.) and operates from -40°C down to -85°C. Standard equipment includes a microprocessor digital controller, audible and visual alarms, remote alarm contacts, battery backup, and a 1/2" access port.
Construction centers on a 14-gauge zinc-coated galvanized steel chamber with a 16-gauge steel exterior finished in powder-coated cool gray. A cascade system using two hermetic compressors and CFC-free R-508B and R-404A refrigerants drives the low-temperature performance. Air-cooled condensing relies on two heavy-duty fans, so no liquid coolant is required. Four adjustable shelves create five compartments and hold up to 25 racks.
Power options cover 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. The cabinet measures 43" × 37" × 79.5" on the exterior and ships at 975 lbs. Manufactured in the USA, this freezer is UL Listed. An automatic timer restarts the unit after a power failure, protecting stored samples.
Key Features
- Cascade refrigeration: two hermetic compressors with CFC-free R-508B and R-404A refrigerants reach -85°C.
- Digital temperature control: dual display shows set point and chamber temperature, with a scan button and tamper-proof lockout.
- Alarm system: battery-operated audible and visual alarm signals mechanical or electrical failure, plus over- and under-temperature settings, a silencing switch, a battery test switch, and a relay for remote hook-up.
- Power failure recovery: an automatic timer system restarts the unit after a power interruption.
- Capacity: 626 L (22 cu.ft.) holds up to 25 racks across four adjustable shelves and five compartments.
- Air-cooled condenser: two heavy-duty fans dissipate heat with no liquid coolant required.
How to Choose the Right Ultra-Low Freezer
Selecting an ultra-low freezer comes down to matching sample volume, target temperature, and site power to the unit's engineering. Use the criteria below to confirm the ULF601U fits your storage workflow.
- Capacity: 626 L (22 cu.ft.) and 25-rack capacity determine how many samples and racks a single footprint can store.
- Temperature range: a -40°C to -85°C operating window covers long-term biological and reagent storage that standard freezers cannot reach.
- Control type: digital control with dual display and tamper-proof lockout protects set points from accidental changes.
- Voltage: verify your circuit against the 115V/208V/230V 60 Hz or 220V 50/60 Hz single-phase options before installation.
- Footprint: confirm the 43" × 37" × 79.5" exterior and 975 lb weight clear doorways and floor-load limits.
- Safety and alarms: battery-backed audible/visual alarms and remote relay contacts guard samples during power or mechanical faults.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 22 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 626 L / 22 cu.ft. |
| Rack Capacity | 25 racks |
| Shelving | 4 adjustable shelves (5 compartments) |
| Interior Dimensions | 28.5" × 26" × 51.25" (72 × 66 × 130 cm) |
| Exterior Dimensions | 43" × 37" × 79.5" (109 × 93 × 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) | 797059929955 |
| Shipping Weight | 975 lbs |
| Dimensions (L × W × H) | 46 × 43 × 86 in |
| Component Size | 22 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-601U | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every ULF601U ships as a genuine factory unit backed by the manufacturer warranty. Order directly and our lab-equipment specialists stand ready for spec and installation questions.
- Authorized Yamato Scientific dealer — genuine unit with full manufacturer warranty.
- In stock and ready to ship.
- Ships from USA inventory.
- Dedicated lab-equipment specialists for specification support.
Frequently Asked Questions
What temperature range does the Yamato ULF601U reach?
The ULF601U operates from -40°C down to -85°C. A cascade refrigeration system with two hermetic compressors and CFC-free R-508B and R-404A refrigerants delivers this ultra-low range.
What is the storage capacity and rack count?
Interior capacity is 626 L (22 cu.ft.) with room for up to 25 racks. Four adjustable shelves divide the chamber into five compartments for organized sample storage.
What power supply does the ULF601U require?
The freezer accepts 115V, 208V, or 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Confirm your circuit against these options before installation.
What are the exterior dimensions and weight?
Exterior dimensions are 43" × 37" × 79.5" and the shipping weight is 975 lbs. Interior dimensions measure 28.5" × 26" × 51.25". Verify doorway and floor-load clearance before delivery.
What materials is the cabinet built from?
The chamber is 14-gauge zinc-coated galvanized steel and the exterior is 16-gauge steel finished in powder-coated cool gray. The unit is manufactured in the USA and is UL Listed.
What alarm and power-failure protection does it include?
A battery-operated alarm emits audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, a silencing switch, and a remote relay. An automatic timer restarts the unit after a power failure.