Chest Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost Overview
The Chest Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost (model ULF801C) from Yamato Scientific is a laboratory ultra-low freezer delivering a -40°C to -85°C operating range across 626 L of usable space. Sold by LabSupplies.com as an authorized dealer, this manual-defrost chest unit holds up to 36 racks for long-term biological sample preservation.
A 14-gauge zinc-coated galvanized steel chamber pairs with a 16-gauge steel exterior finished in powder-coated cool gray. Cascade refrigeration drives two hermetic compressors charged with CFC- and HCFC-free R-508B and R-404A refrigerants. Air-cooled condensing uses two heavy-duty fans, so no liquid coolant is required.
Electrical configurations span 115V, 208V, and 230V at 60 Hz single-phase, plus a 220V 50/60 Hz option. Exterior dimensions measure 98" × 36" × 43.5", and the freezer weighs 1,075 lbs. Built in the USA and UL Listed, it ships with a digital dual-display controller, battery-backed alarms, and automatic power-failure recovery.
Key Features
- Digital dual-display control: separate readouts for set point and chamber temperature, a scan button for setting, and a tamper-proof lockout.
- Cascade refrigeration: two hermetic compressors with CFC-free R-508B and R-404A refrigerants reach the -40°C to -85°C range.
- Battery-operated alarm system: audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, an alarm silencing switch, and a battery test switch.
- Remote alarm relay: built-in relay supports hook-up to facility monitoring systems.
- Automatic power-failure recovery: a timer system restarts the unit once power is restored.
- Standard 1/2" access port: routes probes and external monitoring lines into the chamber.
How to Choose the Right Ultra-Low Freezer
Selecting an ultra-low freezer means matching storage volume, achievable temperature, and site power to your sample inventory and lab infrastructure. Weigh the criteria below .
- Capacity: usable interior volume and rack count determine how many samples fit; the ULF801C offers 626 L and accommodates up to 36 racks.
- Temperature range: confirm the unit reaches the storage temperature your protocols require, down to -85°C here.
- Control type: digital dual-display control with set-point lockout supports validated, repeatable operation versus basic analog setups.
- Voltage and power: verify your circuit matches an available electrical configuration (115V, 208V, 230V at 60 Hz, or 220V at 50/60 Hz).
- Footprint and weight: chest format requires floor clearance for the 98" × 36" × 43.5" exterior and flooring rated for 1,075 lbs.
- Alarms and recovery: battery-backed audible/visual alarms, a remote relay, and automatic power-failure recovery protect samples during 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 | 36 racks |
| Interior Dimensions | 67" × 19" × 30" (170 × 48 × 76 cm) |
| Exterior Dimensions | 98" × 36" × 43.5" (248 × 91 × 110 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) | 797059929917 |
| Shipping Weight | 1075 lbs |
| Dimensions (L × W × H) | 101 × 43 × 53 in |
| Component Size | 22 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-801C | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every ULF801C arrives as a genuine factory unit backed by the manufacturer warranty. Order directly and our lab-equipment specialists are ready to answer spec questions before you commit.
- Authorized Yamato Scientific dealer — genuine unit with full manufacturer warranty.
- In stock and ready to ship from USA inventory.
- Dedicated lab-equipment specialists for technical and configuration questions.
- Built in the USA and UL Listed for reliable laboratory service.
Frequently Asked Questions
What temperature range does the ULF801C reach?
The ULF801C operates from -40°C to -85°C. A cascade refrigeration system with two hermetic compressors and CFC-free R-508B and R-404A refrigerants drives the unit to ultra-low storage temperatures.
What is the storage capacity and footprint of this freezer?
Interior capacity is 626 L (22 cu.ft.) with room for up to 36 racks. Interior dimensions measure 67" × 19" × 30", and the exterior measures 98" × 36" × 43.5", with a unit weight of 1,075 lbs.
What electrical configurations are available?
The ULF801C is offered in 115V, 208V, and 230V at 60 Hz single-phase, plus a 220V 50/60 Hz single-phase configuration. Confirm your lab circuit matches the configuration you order.
What materials is the cabinet constructed from?
The chamber is 14-gauge zinc-coated galvanized steel, while the exterior is 16-gauge steel finished in powder-coated cool gray. This construction supports durable, long-term laboratory use.
How does the freezer protect samples during a power or equipment failure?
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 battery test switch. A remote relay enables facility monitoring, and an automatic timer restarts the unit after a power failure.
Does this unit require manual defrosting?
Yes, the ULF801C is a manual-defrost chest freezer. Manual defrost avoids automatic warming cycles, helping maintain stable ultra-low temperatures for sensitive stored samples.