Temporarily unavailable. Yamato Scientific America has temporarily suspended sales of the ULF and LTF freezer series to comply with EPA and CARB refrigerant requirements. Yamato is replacing them with the VUF and VLF series.
Why order the ULF701U from LabSupplies.com
Upright Style Ultra Low Freezers -40°C To -85°C, 25 cu.ft., Manual Defrost Overview
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.
Key Features
- 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.
- 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.
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.
- Voltage and site power: verify your facility circuit against the 115V/208V/230V 60 Hz and 220V 50/60 Hz single-phase options.
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 |
| Shipping Dimensions (L × W × H) | 53 × 43 × 86 in |
| Component Size | 25 CF |
| Other Certification | UL Listed |
| Warranty | 1 year (Yamato Scientific America) |
| Service | Calibration and preventive maintenance on site by Yamato-certified technicians or at Yamato's California service center |
Compare ULF Series Models
| Model | Capacity | Temperature range | Racks | Interior (W × D × H) | Exterior |
|---|---|---|---|---|---|
| ULF401U | 13 cu.ft. | -40°C to -85°C | 15 racks | 20" × 22" × 51.25" (50 × 55 × 130 cm) | 35" × 34.5" × 79.5" (88 × 87 × 201 cm) |
| ULF501U | 18 cu.ft. | -40°C to -85°C | 20 racks | 23" × 26" × 51.25" (58 × 66 × 130 cm) | 40" × 36" × 79.5" (101 × 91 × 201 cm) |
| ULF601U | 22 cu.ft. | -40°C to -85°C | 25 racks | 28.5" × 26" × 51.25" (72 × 66 × 130 cm) | 43" × 37" × 79.5" (109 × 93 × 201 cm) |
| ULF701U (this model) | 25 cu.ft. | -40°C to -85°C | 30 racks | 34" × 25" × 51.25" (86 × 63 × 130 cm) | 50" × 37" × 79.5" (127 × 93 × 201 cm) |
| ULF801U | 28 cu.ft. | -40°C to -80°C | 30 racks | 38" × 25" × 51.25" (96 × 63 × 130 cm) | 54" × 37" × 79.5" (137 × 93 × 201 cm) |
| ULF901U | 31 cu.ft. | -40°C to -80°C | 35 racks | 42" × 25" × 51.25" (106 × 63 × 130 cm) | 60.5" × 37" × 79.5" (153 × 93 × 201 cm) |
Ordering Information
| Catalog number | GTIN / UPC |
|---|---|
| ULF-701U | 797059929962 |
| Manufacturer | Yamato Scientific |
| Manufacturer part number | ULF-701U |
| UNSPSC | 41103000 — Ultra Low Freezer |
| Export classification (ECCN) | EAR99 |
Documents & Downloads
More in This Series
- Yamato ULF501UP Platinum Upright Style Ultra Low Freezers -40°C To -85°C, 18 cu.ft., Manual Defrost
- Yamato ULF501CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost
- Yamato ULF401UP Platinum Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost
- Yamato ULF601CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 17 cu.ft., Manual Defrost
- Yamato ULF601UP Platinum Upright Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost
- Yamato ULF401CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost
View all Ultra-Low Temperature Freezers →
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.
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.
What is the UNSPSC code for the Yamato ULF701U?
The Yamato ULF701U is classified under UNSPSC 41103000 (ultra low freezer).
Is there a spec sheet or brochure for the Yamato ULF701U?
Yes. The Yamato ULF Series Ultra-Low Freezer brochure (845 KB PDF) is linked under Documents & Downloads on this page.
What are the interior dimensions of the Yamato ULF701U?
The Yamato ULF701U chamber measures 34" × 25" × 51.25" (86 × 63 × 130 cm) inside (W × D × H).
How many storage racks does the Yamato ULF701U hold?
Yamato rates the ULF701U at 30 racks in 710 L / 25 cu.ft. of storage.
What refrigeration system does the Yamato ULF701U use?
The Yamato ULF701U uses cascade type — two hermetic compressors, CFC-free R-508B and R-404A (CFC- & HCFC-free) refrigerant and manual defrost.
What optional accessories are available for the Yamato ULF701U?
Yamato offers these options for the ULF701U: chart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves.
What are the electrical requirements for the Yamato ULF701U?
Yamato specifies 115V / 208V / 230V, 60 Hz, 1-phase; 220V, 50/60 Hz, 1-phase for the ULF701U.
