Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost Overview
The Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost (model ULF501C) is a Yamato Scientific laboratory ultra-low freezer delivering a 14 cu.ft. (400 L) chest chamber across a -40°C to -85°C range. LabSupplies.com, authorized dealer, supplies genuine units for long-term sample storage.
Cascade refrigeration uses two hermetic compressors and CFC-free R-508B and R-404A refrigerants, paired with an air-cooled condenser and two heavy-duty fans. No liquid coolant is required. Chamber walls are 14-gauge zinc-coated galvanized steel; the exterior is 16-gauge steel finished in powder-coated cool gray. Manual defrost keeps the design serviceable.
Electrical configurations include 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Exterior dimensions measure 72.5" × 33" × 47.5", with a shipping weight near 900 lbs. Built in the USA, the freezer carries a UL Listed mark.
Key Features
- Microprocessor digital controller: dual display shows set point and chamber temperature, with a scan button for setting and a tamper-proof lockout.
- Battery-backed alarm system: audible and visual signals on mechanical or electrical failure, plus over- and under-temperature settings, an alarm silencing switch, and a battery test switch.
- Remote alarm relay: a relay is provided for hooking the alarm into a central building monitoring system.
- Automatic power failure recovery: a timer system restarts the unit once power is restored.
- Cascade refrigeration: two hermetic compressors and CFC-free R-508B and R-404A refrigerants reach -85°C without liquid coolant.
- 1/2" access port: standard port supports probes and external monitoring.
How to Choose the Right Ultra-Low Freezer
Selecting an ultra-low freezer comes down to matching chamber size, temperature class, and site power to your storage workflow. Review these axes before specifying a unit.
- Capacity: a 14 cu.ft. (400 L) chamber holds up to 30 racks, so confirm rack count and sample throughput against your inventory growth.
- Temperature range: a -40°C to -85°C span suits long-term storage of cell lines, tissue, and reagents; verify your protocols sit within that band.
- Control type: a digital microprocessor controller with dual display and tamper-proof lockout protects set points from accidental changes in shared labs.
- Voltage: match the unit to available site power; this model offers 115V, 208V, 230V at 60 Hz and 220V at 50/60 Hz, single-phase.
- Footprint and access: chest-style loading needs overhead clearance; check the 72.5" × 33" × 47.5" exterior against your floor plan.
- Safety monitoring: battery-backed alarms and a remote relay matter when samples are irreplaceable and require central oversight.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 14 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 400 L / 14 cu.ft. |
| Rack Capacity | 30 racks |
| Interior Dimensions | 62" × 20" × 20" (157 × 50 × 50 cm) |
| Exterior Dimensions | 72.5" × 33" × 47.5" (184 × 83 × 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) | 797059929887 |
| Shipping Weight | 900 lbs |
| Dimensions (L × W × H) | 77 × 42 × 55 in |
| Component Size | 14 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-501C | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every ULF501C ships as a genuine factory unit backed by the manufacturer warranty. Our lab-equipment specialists answer spec questions before you order.
- Authorized Yamato Scientific dealer: genuine units with full manufacturer warranty.
- In stock: ready to ship from USA inventory.
- Ships from the USA: domestic fulfillment on this UL Listed, USA-built freezer.
- Specialist support: dedicated lab-equipment team for configuration and spec questions.
Frequently Asked Questions
What temperature range does the ULF501C reach?
The ULF501C operates from -40°C to -85°C. Cascade refrigeration with two hermetic compressors and CFC-free R-508B and R-404A refrigerants drives the chamber to ultra-low temperatures without liquid coolant.
What is the storage capacity and rack count?
The chamber holds 14 cu.ft. (400 L) and accommodates up to 30 racks. Interior dimensions measure 62" × 20" × 20" (157 × 50 × 50 cm).
What voltage options are available?
The unit supports 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Match the configuration to your available site power before ordering.
What is the freezer constructed from?
The chamber is 14-gauge zinc-coated galvanized steel. Its exterior uses 16-gauge steel with a powder-coated cool gray finish for durability in lab environments.
How does the unit protect samples during a power failure?
An automatic timer system restarts the freezer once power returns. A battery-backed alarm signals mechanical or electrical failure audibly and visually, and a relay supports remote monitoring.
What are the exterior dimensions and weight?
The exterior measures 72.5" × 33" × 47.5" (184 × 83 × 120 cm). Shipping weight is approximately 900 lbs, so plan delivery access and floor clearance accordingly.