Chest Style Ultra Low Freezers -40°C To -80°C, 27 cu.ft., Manual Defrost Overview
The Chest Style Ultra Low Freezer ULF901C from Yamato Scientific is a 27 cu.ft. laboratory freezer holding a -40°C to -80°C range with manual defrost. Built for long-term biological and reagent storage, this chest-format unit ships standard with a microprocessor digital controller, audible and visual alarms, remote alarm contacts, alarm battery back-up, and a 1/2" access port. LabSupplies.com supplies it as an authorized dealer.
A cascade refrigeration system pairs two hermetic compressors with CFC-free R-508B and HCFC-free R-404A refrigerants. Air-cooled condensing uses two heavy-duty fans, so no liquid coolant is required. The chamber is 14-gauge zinc-coated galvanized steel; its 16-gauge steel exterior carries a powder-coated cool gray finish. Interior space accepts up to 48 racks across 766 liters.
Electrical options span 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Exterior dimensions measure 98" × 36" × 43.5", with a shipping weight of 1,125 lbs. Manufactured in the USA and UL Listed, the unit includes an automatic timer that restarts operation after a power failure.
Key Features
- Digital control with dual display: microprocessor controller shows set point and chamber temperature, with a scan button for setting and a tamper-proof lockout.
- Cascade refrigeration: two hermetic compressors drive the -40°C to -80°C range using CFC-free R-508B and HCFC- and CFC-free R-404A refrigerants.
- Battery-backed alarm system: audible and visual signals fire on mechanical or electrical failure, with over/under-temperature settings, an alarm silencing switch, a battery test switch, and a relay for remote alarm hook-up.
- Automatic power-failure recovery: an integrated timer system restarts the unit after a power outage.
- Air-cooled condenser: two heavy-duty fans handle heat rejection, eliminating any liquid coolant requirement.
- Rugged construction: 14-gauge zinc-coated galvanized steel chamber and 16-gauge powder-coated steel exterior; 766 L holds up to 48 racks.
How to Choose the Right Ultra-Low Freezer
Selecting an ultra-low freezer comes down to matching storage volume, temperature class, and site power to your sample workload. Weigh these axes before specifying a unit.
- Capacity: this model offers 27 cu.ft. (766 L) and accepts up to 48 racks; size to your sample count plus near-term growth.
- Temperature range: a -40°C to -80°C span suits long-term biological, vaccine, and reagent storage where deep-cold integrity matters.
- Control type: a microprocessor digital controller with dual display and tamper-proof lockout protects set points in shared lab environments.
- Voltage and site power: confirm your circuit; this unit supports 115V, 208V, and 230V at 60 Hz, plus 220V at 50/60 Hz, single-phase.
- Footprint: chest-style units load from the top and measure 98" × 36" × 43.5"; verify floor space and access clearance.
- Safety and continuity: battery-backed alarms, remote alarm relay, and automatic power-failure restart guard samples during disruptions.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 27 cu.ft. |
| Temperature Range | -40°C to -80°C |
| Defrost | Manual |
| Interior Capacity | 766 L / 27 cu.ft. |
| Rack Capacity | 48 racks |
| Interior Dimensions | 67" × 23" × 31.25" (170 × 57 × 79 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) | 797059929924 |
| Shipping Weight | 1125 lbs |
| Dimensions (L × W × H) | 101 × 43 × 53 in |
| Component Size | 27 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-901C | EA | EA |
Documentation
More in This Series
- Platinum Upright Style Ultra Low Freezers -40°C To -80°C, 28 cu.ft., Manual Defrost
- Platinum Upright Style Ultra Low Freezers -40°C To -80°C, 30 cu.ft., Manual Defrost
- Chest Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost
- Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost
- Platinum Chest Style Ultra Low Freezers -40°C To -80°C, 21Cu.Ft., Manual Defrost
- Upright Style Ultra Low Freezers -40°C To -80°C, 31 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 ULF901C ships as a genuine unit backed by the manufacturer warranty. Order directly and our lab-equipment specialists are ready to confirm specifications before you commit.
- Authorized Yamato Scientific dealer: genuine equipment with full manufacturer warranty coverage.
- In stock: ready to ship from USA inventory.
- Made in USA: manufactured domestically and UL Listed.
- Specialist support: dedicated lab-equipment specialists answer detailed spec and compatibility questions.
Frequently Asked Questions
What temperature range does the Yamato ULF901C reach?
The ULF901C operates from -40°C to -80°C. A cascade refrigeration system with two hermetic compressors maintains this deep-cold range for long-term sample storage.
What is the storage capacity and how many racks does it hold?
Interior capacity is 27 cu.ft. (766 liters), and the chamber accepts up to 48 racks. Interior dimensions measure 67" × 23" × 31.25" (170 × 57 × 79 cm).
What electrical supply does the ULF901C require?
The unit supports 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Confirm your available circuit before installation.
What materials are used in the chamber and exterior?
The chamber is 14-gauge zinc-coated galvanized steel. Its exterior is 16-gauge steel with a powder-coated cool gray finish for durability.
What happens to stored samples during a power failure?
An automatic timer system restarts the unit after a power outage. A battery-backed alarm also emits audible and visual signals on electrical or mechanical failure, with a relay for remote alarm hook-up.
Is the refrigerant environmentally compliant?
Yes. The ULF901C uses CFC-free R-508B and CFC- and HCFC-free R-404A refrigerants, paired with an air-cooled condenser that needs no liquid coolant.
