Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost Overview
The Chest Style Ultra Low Freezer ULF401C from Yamato Scientific is a 12 cu.ft. laboratory freezer holding -40°C to -85°C for long-term sample storage. LabSupplies.com, an authorized dealer, supplies this manual-defrost cascade unit with a microprocessor digital controller, audible and visual alarms, remote alarm contacts, battery alarm backup, and a 1/2" access port standard.
Cascade refrigeration uses two hermetic compressors and CFC-free R-508B and R-404A refrigerants to reach ultra-low setpoints. An air-cooled condenser with two heavy-duty fans needs no liquid coolant. The chamber is 14-gauge zinc-coated galvanized steel; the exterior is 16-gauge steel powder-coated cool gray for durable daily lab service.
Operating on 115V/208V/230V at 60 Hz or 220V at 50/60 Hz, single-phase, the unit measures 65.5" × 32" × 47.5" externally and weighs 825 lbs. Manufactured in the USA, it carries UL Listing and an automatic timer system that restarts the freezer after a power failure.
Key Features
- Cascade refrigeration: two hermetic compressors with CFC-free R-508B and R-404A refrigerants reach -40°C to -85°C.
- Digital control: dual display shows setpoint and chamber temperature, with a scan button and tamper-proof lockout.
- Battery-backed alarm: audible and visual signals on mechanical or electrical failure, plus over/under-temperature settings, silencing switch, and battery test switch.
- Remote alarm relay: built-in relay supports remote alarm hook-up for centralized monitoring.
- Power-failure recovery: automatic timer restarts the unit after an outage.
- 340 L capacity: 12 cu.ft. interior accepts up to 27 racks for high-density storage.
How to Choose the Right Ultra-Low Freezer
Selecting an ultra-low freezer depends on sample volume, target temperature, and the power available at your installation site. Match each axis below to your lab's workflow before specifying a unit.
- Capacity: a 340 L / 12 cu.ft. chamber holding 27 racks suits mid-sized biorepositories; confirm rack format against your tube or vial inventory.
- Temperature range: a -40°C to -85°C span covers most long-term biological storage; verify the lowest setpoint your samples require.
- Control type: digital controllers with dual display and tamper-proof lockout protect setpoints from accidental change in shared labs.
- Voltage: match 115V, 208V, 230V, or 220V single-phase to your circuit before delivery.
- Footprint: chest-style units occupy floor space horizontally; check the 65.5" × 32" × 47.5" exterior against your room and door clearances.
- Safety systems: battery-backed alarms, remote relays, and automatic power-failure recovery guard samples during outages.
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
More in This Series
- Undercounter Ultra Low Freezers -40°C To -85°C, 3 cu.ft., Manual Defrost
- Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost
- Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost
- Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost
- Upright Style Ultra Low Freezers -40°C To -85°C, 18 cu.ft., Manual Defrost
- Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 5 cu.ft., Manual Defrost
View all Ultra-Low Temperature Freezers →
Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every ULF401C arrives as a genuine unit backed by the manufacturer's warranty. Order directly and ship from USA inventory.
- Authorized dealer: genuine Yamato Scientific freezer with full manufacturer warranty.
- In stock: ready to ship from USA inventory.
- Direct ordering: place your order online without contact-to-order steps.
- Lab-equipment specialists: dedicated team answers spec and configuration questions.
Frequently Asked Questions
What temperature range does the ULF401C hold?
The ULF401C holds -40°C to -85°C. Cascade refrigeration with two hermetic compressors and CFC-free R-508B and R-404A refrigerants reaches and maintains these ultra-low setpoints for long-term sample storage.
How much storage capacity does this freezer provide?
The chamber offers 340 L / 12 cu.ft. of interior capacity and accepts up to 27 racks. Interior dimensions measure 55" × 19" × 20" (139 × 48 × 50 cm).
What electrical supply does the ULF401C require?
It operates on 115V, 208V, or 230V at 60 Hz, or 220V at 50/60 Hz, all single-phase. Confirm your site circuit before installation to match the unit's configuration.
What materials is the freezer built from?
The chamber is 14-gauge zinc-coated galvanized steel, and the exterior is 16-gauge steel powder-coated cool gray. This construction supports durable daily use in laboratory environments.
What happens during a power failure?
An automatic timer system restarts the unit after a power failure. A battery-operated alarm also emits audible and visual signals on mechanical or electrical failure, with a relay provided for remote alarm hook-up.
What are the exterior dimensions and weight for installation planning?
Exterior dimensions are 65.5" × 32" × 47.5" (166 × 81 × 120 cm), and the unit weighs 825 lbs. Verify room clearance and door access against these measurements before delivery.
