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 ULF801U from LabSupplies.com
Upright Style Ultra Low Freezers -40°C To -80°C, 28 cu.ft., Manual Defrost Overview
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.
Key Features
- 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.
- 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.
- Voltage: verify whether your facility supplies 115V, 208V, 230V, or 220V single-phase circuits and size the dedicated line accordingly.
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 |
| Shipping Dimensions (L × W × H) | 101 × 43 × 53 in |
| Component Size | 28 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 | 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 (this model) | 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-801U | 797059929979 |
| Manufacturer | Yamato Scientific |
| Manufacturer part number | ULF-801U |
| UNSPSC | 41103000 — Ultra Low Freezer |
| Export classification (ECCN) | EAR99 |
Documents & Downloads
More in This Series
- Yamato ULF901U Upright Style Ultra Low Freezers -40°C To -80°C, 31 cu.ft., Manual Defrost
- Yamato ULF701CP Platinum Chest Style Ultra Low Freezers -40°C To -80°C, 21Cu.Ft., Manual Defrost
- Yamato ULF701UP Platinum Upright Style Ultra Low Freezers -40°C To -85°C, 25 cu.ft., Manual Defrost
- Yamato ULF701C Chest Style Ultra Low Freezers -40°C To -80°C, 21Cu.Ft., Manual Defrost
- Yamato ULF801C Chest Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost
- Yamato ULF801UP Platinum Upright Style Ultra Low Freezers -40°C To -80°C, 28 cu.ft., Manual Defrost
View all Ultra-Low Temperature Freezers →
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 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.
What is the UNSPSC code for the Yamato ULF801U?
The Yamato ULF801U is classified under UNSPSC 41103000 (ultra low freezer).
Where is the Yamato ULF801U manufactured?
Yamato Scientific lists USA as the country of origin for the ULF801U.
Is there a spec sheet or brochure for the Yamato ULF801U?
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 ULF801U?
The Yamato ULF801U chamber measures 38" × 25" × 51.25" (96 × 63 × 130 cm) inside (W × D × H).
What refrigeration system does the Yamato ULF801U use?
The Yamato ULF801U uses cascade type — two hermetic compressors, CFC-free R-508B and R-404A (CFC- & HCFC-free) refrigerant and manual defrost.
What certifications does the Yamato ULF801U carry?
Yamato lists the ULF801U as UL Listed.
What optional accessories are available for the Yamato ULF801U?
Yamato offers these options for the ULF801U: chart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves.
What are the electrical requirements for the Yamato ULF801U?
Yamato specifies 115V / 208V / 230V, 60 Hz, 1-phase; 220V, 50/60 Hz, 1-phase for the ULF801U.
What are the shipping dimensions and weight of the Yamato ULF801U?
Yamato's shipping data lists the ULF801U at 101 × 43 × 53 in and 1125 lb packed.
