Upright Style Ultra Low Freezers -40°C To -80°C, 28 cu.ft., Manual Defrost Overview
The Upright Style Ultra Low Freezers -40°C To -80°C, 28 cu.ft., Manual Defrost (model ULF801U) from Yamato Scientific is an upright laboratory freezer delivering a chamber range of -40°C to -80°C across 28 cu.ft. (792 L) of storage. Built for long-term sample preservation, it holds up to 30 racks and ships from LabSupplies.com as an authorized Yamato Scientific dealer.
Cascade-type refrigeration runs two hermetic compressors on CFC- and HCFC-free R-508B and R-404A refrigerants. An air-cooled condenser with two heavy-duty fans removes heat without liquid coolant. The 792 L chamber is 14-gauge zinc-coated galvanized steel; the 16-gauge steel exterior carries a power-coated cool-gray finish. Four adjustable shelves divide the interior into five compartments.
Power options cover 115V, 208V, 230V at 60 Hz, plus 220V at 50/60 Hz, all single-phase. Exterior dimensions measure 54" × 37" × 79.5" and the unit weighs 1,125 lbs, so verify floor space and power before delivery. Manufactured in the USA and UL Listed, ULF801U arrives with a digital controller, alarm package, and battery backup as standard equipment.
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-operated alarm system: audible and visual signals trigger on mechanical or electrical failure, with over- and under-temperature settings, alarm silencing, and a battery test switch.
- Remote alarm capability: a relay is provided for remote alarm hook-up, plus a 1/2" access port for monitoring probes.
- Automatic power-failure recovery: a timer system restarts the unit after a power interruption.
- Cascade refrigeration: two hermetic compressors and CFC- and HCFC-free R-508B and R-404A refrigerants reach the -40°C to -80°C range.
- Air-cooled condenser: two heavy-duty fans dissipate heat with no liquid coolant required.
How to Choose the Right Ultra-Low Freezer
Selecting an ultra-low freezer means matching chamber capacity, temperature class, and site infrastructure to your sample inventory. Review these axes before specifying a unit for your lab.
- Capacity: the 28 cu.ft. (792 L) chamber holds up to 30 racks across five compartments, so confirm your current and projected sample count.
- Temperature range: a -40°C to -80°C span suits biological samples, enzymes, and reagents that demand deep-frozen storage; match the range to your protocol.
- Control type: a microprocessor digital controller with dual display and tamper-proof lockout supports compliance-driven monitoring and reduces accidental setpoint changes.
- Voltage: verify whether your facility supplies 115V, 208V, 230V, or 220V single-phase circuits and size the dedicated line accordingly.
- Footprint and weight: exterior dimensions of 54" × 37" × 79.5" and a 1,125 lb load require clearance, floor rating, and a delivery path.
- Safety and backup: battery-backed alarms, remote alarm relay, and automatic power-failure recovery protect samples during outages.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 28 cu.ft. |
| Temperature Range | -40°C to -80°C |
| Defrost | Manual |
| Interior Capacity | 792 L / 28 cu.ft. |
| Rack Capacity | 30 racks |
| Shelving | 4 adjustable shelves (5 compartments) |
| Interior Dimensions | 38" × 25" × 51.25" (96 × 63 × 130 cm) |
| Exterior Dimensions | 54" × 37" × 79.5" (137 × 93 × 201 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) | 797059929979 |
| Shipping Weight | 1125 lbs |
| Dimensions (L × W × H) | 101 × 43 × 53 in |
| Component Size | 28 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-801U | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com supplies the Yamato Scientific ULF801U ultra-low freezer direct from USA inventory, so your lab orders a genuine unit and skips the back-and-forth of a quote request.
- Authorized Yamato Scientific dealer: every freezer is a genuine unit backed by the manufacturer warranty.
- In stock: ULF801U is ready to order, not a special-request item.
- Ships from USA inventory: domestic stock means a faster path to your facility.
- Lab-equipment specialists: our team answers spec and configuration questions before you order.
Frequently Asked Questions
What temperature range does the Yamato ULF801U reach?
The ULF801U operates across -40°C to -80°C. A cascade refrigeration system with two hermetic compressors and CFC- and HCFC-free R-508B and R-404A refrigerants reaches and holds the deep-freeze range.
How much storage capacity and rack space does this freezer offer?
The chamber provides 28 cu.ft. (792 L) of interior capacity and holds up to 30 racks. Four adjustable shelves divide the space into five compartments; interior dimensions are 38" × 25" × 51.25".
What voltage and power does the ULF801U require?
The unit runs on 115V, 208V, or 230V at 60 Hz, plus a 220V option at 50/60 Hz, all single-phase. Confirm a dedicated circuit matched to your facility supply before installation.
What is the exterior footprint and weight for delivery planning?
Exterior dimensions are 54" × 37" × 79.5" (137 × 93 × 201 cm) and the freezer weighs 1,125 lbs. Verify clearance, floor rating, and the delivery path before scheduling.
What materials is the freezer built from?
The chamber uses 14-gauge zinc-coated galvanized steel. The exterior is 16-gauge steel finished in power-coated cool gray. An air-cooled condenser with two heavy-duty fans dissipates heat without liquid coolant.
What alarm and backup protection does the ULF801U include?
Standard equipment includes a battery-operated alarm with audible and visual signals, over- and under-temperature settings, alarm silencing, and a battery test switch. A relay supports remote alarm hook-up, and an automatic timer restarts the unit after a power failure.