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 ULF401U from LabSupplies.com
Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost Overview
Chamber walls use 14-gauge zinc-coated galvanized steel, while the exterior is 16-gauge steel finished in power-coated cool gray. A cascade refrigeration system pairs two hermetic compressors with CFC-free R-508B and R-404A refrigerants. Air-cooled condensing with two heavy-duty fans removes any need for liquid coolant.
Key Features
- Temperature range: -40°C to -85°C with manual defrost across a 370 L / 13 cu.ft. chamber.
- Digital control system: dual display for set point and chamber temperature, scan button for setting, and tamper-proof lockout.
- Cascade refrigeration: two hermetic compressors running CFC-free R-508B and HCFC-free R-404A, with an air-cooled condenser and two heavy-duty fans.
- Alarm system: battery-operated audible and visual alarms, over- and under-temperature settings, silencing switch, battery test switch, and a relay for remote hook-up.
- Power failure recovery: automatic timer system restarts the unit after an outage.
How to Choose the Right Ultra-Low Freezer
Matching an ultra-low freezer to a lab means balancing sample volume, target setpoint, site power, and floor space. Weigh these axes against your protocol.
- Voltage: 115V, 208V, 230V, or 220V options let you match existing bench or dedicated circuits; check available amperage at the install site.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 13 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 370 L / 13 cu.ft. |
| Rack Capacity | 15 racks |
| Shelving | 4 adjustable shelves (5 compartments) |
| Interior Dimensions | 20" × 22" × 51.25" (50 × 55 × 130 cm) |
| Exterior Dimensions | 35" × 34.5" × 79.5" (88 × 87 × 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) | 797059929931 |
| Shipping Weight | 850 lbs |
| Shipping Dimensions (L × W × H) | 46 × 43 × 86 in |
| Component Size | 13 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 (this model) | 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 | 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-401U | 797059929931 |
| Manufacturer | Yamato Scientific |
| Manufacturer part number | ULF-401U |
| UNSPSC | 41103000 — Ultra Low Freezer |
| Export classification (ECCN) | EAR99 |
Documents & Downloads
More in This Series
- Yamato ULF501C Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost
- Yamato ULF301CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost
- Yamato ULF501U Upright Style Ultra Low Freezers -40°C To -85°C, 18 cu.ft., Manual Defrost
- Yamato ULF401C Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost
- Yamato ULF201UN Undercounter Ultra Low Freezers -40°C To -85°C, 3 cu.ft., Manual Defrost
- Yamato ULF201CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 5 cu.ft., Manual Defrost
View all Ultra-Low Temperature Freezers →
Frequently Asked Questions
What temperature range does the ULF401U reach?
The ULF401U operates from -40°C to -85°C. A cascade refrigeration system with two hermetic compressors and CFC-free R-508B and R-404A refrigerants delivers and holds these deep-cold setpoints.
What is the storage capacity and interior size?
The chamber holds 370 L / 13 cu.ft. with capacity for 15 racks. Interior dimensions are 20" × 22" × 51.25" (50 × 55 × 130 cm), divided across four adjustable shelves and five compartments.
What power supply does this freezer require?
The unit accepts 115V, 208V, or 230V at 60 Hz single-phase, plus a 220V 50/60 Hz single-phase configuration. Confirm the available voltage and amperage at your install site before ordering.
Does it have alarms and power-failure protection?
Yes. A battery-operated alarm emits audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, a silencing switch, a battery test switch, and a relay for remote hook-up. An automatic timer system restarts the unit after a power failure.
What is the UNSPSC code for the Yamato ULF401U?
The Yamato ULF401U is classified under UNSPSC 41103000 (ultra low freezer).
Where is the Yamato ULF401U manufactured?
Yamato Scientific lists USA as the country of origin for the ULF401U.
Is there a spec sheet or brochure for the Yamato ULF401U?
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 ULF401U?
The Yamato ULF401U chamber measures 20" × 22" × 51.25" (50 × 55 × 130 cm) inside (W × D × H).
How many storage racks does the Yamato ULF401U hold?
Yamato rates the ULF401U at 15 racks in 370 L / 13 cu.ft. of storage.
What refrigeration system does the Yamato ULF401U use?
The Yamato ULF401U 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 ULF401U carry?
Yamato lists the ULF401U as UL Listed.
What optional accessories are available for the Yamato ULF401U?
Yamato offers these options for the ULF401U: chart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves.
What are the shipping dimensions and weight of the Yamato ULF401U?
Yamato's shipping data lists the ULF401U at 46 × 43 × 86 in and 850 lb packed.
