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 ULF601U from LabSupplies.com
Upright Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost Overview
Construction centers on a 14-gauge zinc-coated galvanized steel chamber with a 16-gauge steel exterior finished in powder-coated cool gray. A cascade system using two hermetic compressors and CFC-free R-508B and R-404A refrigerants drives the low-temperature performance. Air-cooled condensing relies on two heavy-duty fans, so no liquid coolant is required. Four adjustable shelves create five compartments and hold up to 25 racks.
Key Features
- Cascade refrigeration: two hermetic compressors with CFC-free R-508B and R-404A refrigerants reach -85°C.
- Digital temperature control: dual display shows set point and chamber temperature, with a scan button and tamper-proof lockout.
- Alarm system: battery-operated audible and visual alarm signals mechanical or electrical failure, plus over- and under-temperature settings, a silencing switch, a battery test switch, and a relay for remote hook-up.
- Power failure recovery: an automatic timer system restarts the unit after a power interruption.
- Capacity: 626 L (22 cu.ft.) holds up to 25 racks across four adjustable shelves and five compartments.
- 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 comes down to matching sample volume, target temperature, and site power to the unit's engineering. Use the criteria below to confirm the ULF601U fits your storage workflow.
- Capacity: 626 L (22 cu.ft.) and 25-rack capacity determine how many samples and racks a single footprint can store.
- Voltage: verify your circuit against the 115V/208V/230V 60 Hz or 220V 50/60 Hz single-phase options before installation.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 22 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 626 L / 22 cu.ft. |
| Rack Capacity | 25 racks |
| Shelving | 4 adjustable shelves (5 compartments) |
| Interior Dimensions | 28.5" × 26" × 51.25" (72 × 66 × 130 cm) |
| Exterior Dimensions | 43" × 37" × 79.5" (109 × 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) | 797059929955 |
| Shipping Weight | 975 lbs |
| Shipping Dimensions (L × W × H) | 46 × 43 × 86 in |
| Component Size | 22 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 (this model) | 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-601U | 797059929955 |
| Manufacturer | Yamato Scientific |
| Manufacturer part number | ULF-601U |
| UNSPSC | 41103000 — Ultra Low Freezer |
| Export classification (ECCN) | EAR99 |
Documents & Downloads
More in This Series
- Yamato ULF601C Chest Style Ultra Low Freezers -40°C To -85°C, 17 cu.ft., Manual Defrost
- Yamato ULF401CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost
- Yamato ULF401UP Platinum Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost
- Yamato ULF501CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost
- Yamato ULF501UP Platinum Upright Style Ultra Low Freezers -40°C To -85°C, 18 cu.ft., Manual Defrost
- Yamato ULF301CP Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost
View all Ultra-Low Temperature Freezers →
Frequently Asked Questions
What temperature range does the Yamato ULF601U reach?
The ULF601U operates from -40°C down to -85°C. A cascade refrigeration system with two hermetic compressors and CFC-free R-508B and R-404A refrigerants delivers this ultra-low range.
What power supply does the ULF601U require?
The freezer accepts 115V, 208V, or 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Confirm your circuit against these options before installation.
What are the exterior dimensions and weight?
Exterior dimensions are 43" × 37" × 79.5" and the shipping weight is 975 lbs. Interior dimensions measure 28.5" × 26" × 51.25". Verify doorway and floor-load clearance before delivery.
What alarm and power-failure protection does it include?
A battery-operated alarm emits audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, a silencing switch, and a remote relay. An automatic timer restarts the unit after a power failure.
What is the UNSPSC code for the Yamato ULF601U?
The Yamato ULF601U is classified under UNSPSC 41103000 (ultra low freezer).
Is there a spec sheet or brochure for the Yamato ULF601U?
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 ULF601U?
The Yamato ULF601U chamber measures 28.5" × 26" × 51.25" (72 × 66 × 130 cm) inside (W × D × H).
What refrigeration system does the Yamato ULF601U use?
The Yamato ULF601U 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 ULF601U carry?
Yamato lists the ULF601U as UL Listed.
What optional accessories are available for the Yamato ULF601U?
Yamato offers these options for the ULF601U: chart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves.
What are the shipping dimensions and weight of the Yamato ULF601U?
Yamato's shipping data lists the ULF601U at 46 × 43 × 86 in and 975 lb packed.
