Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost Overview
The Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost (model ULF401C) is a chest-format laboratory ultra-low freezer from Yamato Scientific. Storage capacity reaches 340 L (12 cu.ft.), and the cabinet holds up to 27 racks. Operating temperature spans -40°C to -85°C across the chamber. LabSupplies.com supplies this freezer as an authorized Yamato Scientific dealer.
Construction pairs a 14-gauge zinc-coated galvanized steel chamber with a 16-gauge steel exterior. The cabinet is finished in powder-coated cool gray. A cascade refrigeration system runs two hermetic compressors using CFC- and HCFC-free R-508B and R-404A refrigerants. Air-cooled twin fans handle heat rejection, so no liquid coolant is required.
Electrical options cover 115V, 208V, and 230V at 60 Hz, plus 220V at 50/60 Hz, all single-phase. The freezer measures 65.5" × 32" × 47.5" externally and weighs 825 lbs. Manufactured in the USA, the unit is UL Listed. An automatic timer restarts operation after a power failure.
Key Features
- Microprocessor digital control: dual display shows set point and chamber temperature, with a scan button and tamper-proof lockout.
- Alarm system: audible and visual signals on mechanical or electrical failure, plus over- and under-temperature settings and a silencing switch.
- Battery back-up: battery-operated alarm with a dedicated battery test switch keeps monitoring active during power loss.
- Remote alarm relay: a relay supports hook-up to central building monitoring.
- Cascade refrigeration: two hermetic compressors and an air-cooled condenser pull the chamber to -85°C.
- Power-failure recovery: an automatic timer restarts the unit once power returns. A 1/2" access port is included.
How to Choose the Right Ultra-Low Freezer
Matching an ultra-low freezer to your workflow means balancing sample volume, temperature target, site power, and floor space. Use these axes to scope the right unit.
- Capacity: this model stores 340 L (12 cu.ft.) and up to 27 racks, so confirm your sample inventory and rack format before ordering.
- Temperature range: a -40°C to -85°C span suits long-term storage of cells, tissue, plasma, and reagents that demand deep-freeze stability.
- Control type: microprocessor digital control with dual display and lockout protects set points from accidental changes.
- Voltage: verify your circuit against the available 115V, 208V, 230V (60 Hz) and 220V (50/60 Hz) single-phase options.
- Footprint: the chest format needs 65.5" × 32" × 47.5" of clearance and an 825 lb floor rating.
- Safety and monitoring: battery-backed alarms and a remote relay matter where unattended samples must trigger alerts.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 12 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 340 L / 12 cu.ft. |
| Rack Capacity | 27 racks |
| Interior Dimensions | 55" × 19" × 20" (139 × 48 × 50 cm) |
| Exterior Dimensions | 65.5" × 32" × 47.5" (166 × 81 × 120 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) | 797059929870 |
| Shipping Weight | 825 lbs |
| Dimensions (L × W × H) | 70 × 40 × 55 in |
| Component Size | 12 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-401C | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com sells the ULF401C as an authorized Yamato Scientific dealer, so you receive a genuine unit backed by the manufacturer warranty. Order directly and ship from USA inventory.
- Authorized Yamato Scientific dealer: genuine equipment with full manufacturer warranty.
- In stock: ready to order with no waitlist.
- Ships from USA inventory: fulfilled domestically for faster delivery.
- Lab-equipment specialists: our team answers spec and configuration questions before you purchase.
Frequently Asked Questions
What temperature range does the ULF401C reach?
The ULF401C operates from -40°C to -85°C across the chamber. A cascade refrigeration system with two hermetic compressors drives the deep-freeze performance, suited to long-term storage of cells, plasma, tissue, and sensitive reagents.
How much sample capacity and what are the dimensions?
Interior capacity is 340 L (12 cu.ft.), holding up to 27 racks. Interior dimensions are 55" × 19" × 20", and exterior dimensions are 65.5" × 32" × 47.5". The unit weighs 825 lbs.
What voltage and power does this freezer require?
The ULF401C supports 115V, 208V, and 230V at 60 Hz, plus 220V at 50/60 Hz, all single-phase. Confirm your circuit before ordering so the configuration matches your facility power.
What materials is the freezer built from?
The chamber is 14-gauge zinc-coated galvanized steel. The exterior is 16-gauge steel finished in powder-coated cool gray. This construction supports durable, long-term laboratory use.
Which refrigerants does the cascade system use?
The cascade refrigeration system uses CFC-free R-508B and CFC- and HCFC-free R-404A. An air-cooled condenser with two heavy-duty fans rejects heat, so no liquid coolant is required.
What happens during a power failure?
An automatic timer restarts the unit once power returns. A battery-operated alarm with battery test switch keeps monitoring active during outages, and a relay supports remote alarm hook-up to central building systems.