The Yamato ULF-401UP is a 370 L (13 cu.ft) upright ultra-low freezer reaching −40 °C to −85 °C, organized into five compartments behind four adjustable shelves with a door-mounted touch-screen controller. The Yamato ULF-401UP brings cascade two-compressor refrigeration to a vertical footprint that keeps samples at eye level and easy to inventory, adding Hi/Low alarms with email and SMS notification, USB/FTP data logging, and VNC remote access. It is the upright choice for labs that value organized, walk-up access to a −80 °C collection.
Key Specifications
| Spec | Value |
| Model (focus) | Yamato ULF-401UP (ULF Platinum upright series) |
| Style | Upright / vertical |
| Temperature range | −40 °C to −85 °C |
| Capacity | 370 L / 13 cu.ft |
| Shelving | 4 adjustable shelves (5 compartments) |
| Rack capacity | 15 |
| Refrigeration | Cascade type, two hermetic compressors |
| Refrigerants | CFC-free R-508B and R-404A |
| Control | Door-mounted touch-screen; set point + chamber temp |
| Alarming | Hi/Low alarm with email + SMS; dry-contact alarm & power-fail relays; battery back-up |
| Data | Temperature graph, USB/FTP logging, VNC remote access, multi-level security |
| Defrost | Manual |
| Access port | ½" porthole (left side) with plug |
| Construction | 14-ga zinc-coated galvanized chamber; 16-ga steel exterior, powder-coated cool gray |
| Internal dimensions | 20 × 22 × 51.25 in (50 × 55 × 130 cm) |
| External dimensions | 35 × 34.5 × 79.5 in (88 × 87 × 201 cm) |
| Electrical | 115V 60Hz 1-phase (208V / 230V / 220V options) |
Application Profile
Upright ultra-low freezers win when organization and retrieval speed matter as much as raw capacity. The ULF-401UP divides its 370 L into five inner compartments behind four adjustable shelves, each with its own gasketed inner door, so opening one section to pull a box does not warm the whole cabinet — a real advantage for shared −80 °C storage where many users reach in daily. That structure suits cell lines, protein and enzyme stocks, nucleic acids, viral banks, and clinical specimens filed by rack and box for fast inventory (see cold-chain-sample-storage).
The cascade refrigeration stages two hermetic compressors with the low stage running only on demand, holding system pressure low, dissipating heat through an air-cooled condenser, and extending compressor life while pulling a load down quickly. The door-mounted touch-screen Platinum controller adds the monitoring layer that modern facilities require — email/SMS alarms, downloadable logs, and VNC access to prove the cold chain held and to respond before an excursion becomes a loss (see cold-storage-selection). A ½" access port accepts external probes, and CO₂/LN₂ back-up is available for critical inventory.
Frequently Asked Questions
What temperature range and capacity does the ULF-401UP offer? −40 °C to −85 °C in a 370 L / 13 cu.ft upright cabinet with four adjustable shelves across five compartments and a 15-rack capacity.
Why choose an upright over a chest freezer? Uprights keep samples at eye level for fast retrieval and inventory; the five inner-door compartments limit warming when you open one section, which suits high-traffic shared storage.
How does it monitor and alarm? A door-mounted touch-screen controller with Hi/Low alarms via email and SMS, dry-contact alarm and power-failure relays, a battery-backed alarm, and downloadable temperature logs (USB/FTP) plus VNC remote access.
What refrigeration does it use? Cascade two-compressor refrigeration with CFC-free R-508B and R-404A and an air-cooled condenser — no liquid coolant required.
Is defrost automatic? No — manual defrost, standard for −80 °C archival storage.
Ordering & Configuration
quote-based. The ULF-401UP is a capital ultra-low freezer sold through a quote. At quote we confirm electrical service (115 V standard, or 208/220/230 V), floor space and ventilation clearance for the 88 × 87 × 201 cm cabinet, shelf/rack configuration, and CO₂/LN₂ back-up needs. Warranty terms are confirmed with the quote, and lead time is provided at quotation. Request a quote to configure the ULF-401UP for your storage program.
ULF Platinum upright ultra-low, by capacity: the ULF-401UP (370 L / 13 cu.ft) is the mid-size upright; step up to the ULF-801UP (792 L / 28 cu.ft) for maximum vertical capacity, or choose a chest ULF-201CP/601CP when door-opening cold retention outranks walk-up access. All share the Platinum touch-screen controller and networked alarming.
