Upright Style Ultra Low Freezers -40°C To -85°C, 25 cu.ft., Manual Defrost Overview
The Upright Style Ultra Low Freezers -40°C To -85°C, 25 cu.ft., Manual Defrost (model ULF701U) is a laboratory ultra-low freezer from Yamato Scientific, holding 710 L (25 cu.ft.) across a -40°C to -85°C range. LabSupplies.com supplies this unit as an authorized dealer. A microprocessor digital controller anchors daily operation.
Cascade refrigeration pairs two hermetic compressors with CFC-free R-508B and R-404A refrigerants. The chamber uses 14-gauge zinc-coated galvanized steel, while the exterior is 16-gauge steel finished in powder-coated cool gray. Air-cooled condensing runs on two heavy-duty fans, so no liquid coolant is required. Four adjustable shelves divide the interior into five compartments.
Electrical options cover 115V, 208V, and 230V at 60 Hz single-phase, plus a 220V 50/60 Hz single-phase configuration. Cabinet exterior measures 50" × 37" × 79.5", and the unit ships at 1,125 lbs. Manufactured in the USA and UL Listed, this freezer holds up to 30 racks for sample storage.
Key Features
- Microprocessor digital control: 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 trigger on mechanical or electrical failure, with over- and under-temperature settings, a silencing switch, and a battery test switch.
- Remote alarm relay: a built-in relay allows remote alarm hook-up to facility monitoring.
- Automatic power failure recovery: a timer system restarts the unit after a power interruption.
- Cascade refrigeration: two hermetic compressors run CFC-free R-508B and R-404A with an air-cooled, coolant-free condenser.
- 1/2" access port: standard port supports probes and external monitoring leads.
How to Choose the Right Ultra-Low Freezer
Matching an ultra-low freezer to your lab means weighing storage volume, temperature target, control sophistication, and site power against your sample protection needs. Use these axes to scope the right unit.
- Capacity: the ULF701U offers 710 L (25 cu.ft.) and up to 30 racks, so size against your sample inventory and growth.
- Temperature range: a -40°C to -85°C span covers long-term storage of biologics, enzymes, and tissue; confirm your protocol's required set point.
- Control type: microprocessor digital control with dual display and tamper-proof lockout supports validation-driven workflows.
- Voltage and site power: verify your facility circuit against the 115V/208V/230V 60 Hz and 220V 50/60 Hz single-phase options.
- Footprint: exterior dimensions of 50" × 37" × 79.5" and a 1,125 lb weight must fit your floor plan and access route.
- Sample safety: battery-backed alarms, a remote relay, and automatic power-failure recovery protect contents during outages.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 25 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 710 L / 25 cu.ft. |
| Rack Capacity | 30 racks |
| Shelving | 4 adjustable shelves (5 compartments) |
| Interior Dimensions | 34" × 25" × 51.25" (86 × 63 × 130 cm) |
| Exterior Dimensions | 50" × 37" × 79.5" (127 × 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) | 797059929962 |
| Shipping Weight | 1125 lbs |
| Dimensions (L × W × H) | 53 × 43 × 86 in |
| Component Size | 25 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-701U | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com sells the ULF701U as an authorized Yamato Scientific dealer, so every unit ships as a genuine product backed by the manufacturer warranty. Our lab-equipment specialists answer spec and configuration questions before you order.
- Authorized Yamato Scientific dealer: genuine unit with full manufacturer warranty.
- In stock: ready to order directly online.
- Ships from USA inventory: domestic fulfillment for this USA-made freezer.
- Specialist support: dedicated lab-equipment experts handle technical and electrical questions.
Frequently Asked Questions
What temperature range does the ULF701U cover?
The ULF701U operates from -40°C to -85°C. Cascade refrigeration using two hermetic compressors and CFC-free R-508B and R-404A refrigerants reaches and maintains those ultra-low set points.
How much storage capacity does this freezer provide?
This upright freezer holds 710 L, or 25 cu.ft. Four adjustable shelves create five compartments, and the interior accommodates up to 30 racks for sample organization.
What are the exterior dimensions and shipping weight?
Exterior dimensions are 50" × 37" × 79.5" (127 × 93 × 201 cm). Plan your floor space and access route accordingly, since the unit ships at 1,125 lbs.
What electrical supply does the ULF701U require?
Electrical options include 115V, 208V, and 230V at 60 Hz single-phase, plus a 220V 50/60 Hz single-phase configuration. Confirm your facility circuit against these requirements before installation.
What refrigeration and alarm systems are included?
Refrigeration is a cascade type with two hermetic compressors and an air-cooled condenser that needs no liquid coolant. A battery-backed alarm signals failures audibly and visually, with over/under-temperature settings, a remote relay, and automatic power-failure recovery.
Is the ULF701U certified, and where is it made?
Yes, the ULF701U is UL Listed and manufactured in the USA. Chamber construction uses 14-gauge zinc-coated galvanized steel, with a 16-gauge steel exterior finished in powder-coated cool gray.