Upright Style Low Temperature Freezers 0°C To -40°C, 28 cu.ft., Manual Defrost Overview
The Upright Style Low Temperature Freezer (model LTF901U) from Yamato Scientific is a 28 cu.ft. laboratory freezer holding 0°C to -40°C with manual defrost. LabSupplies.com, authorized dealer, supplies this upright unit with a microprocessor digital controller, dual temperature displays, and an audible-visual alarm package for protecting stored samples.
Construction centers on a 14-gauge zinc-coated galvanized steel chamber and a 16-gauge steel exterior finished in powder-coated cool gray. A single-stage refrigeration system with one hermetic compressor cools the 792 L interior, while the air-cooled condenser needs no liquid coolant. Refrigerant is CFC- and HCFC-free. Four adjustable shelves create five compartments and accept up to 30 racks.
Power options span 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Exterior dimensions are 54" × 37" × 79.5", and shipping weight is 1,125 lbs. This freezer is UL Listed and made in the USA. Battery alarm back-up and a remote alarm relay extend monitoring during power or mechanical events.
Key Features
- Microprocessor digital control: two displays show the set temperature and the actual chamber temperature simultaneously.
- Alarm system: battery-operated audible and visual alarm signals mechanical or electrical failure, with over- and under-temperature settings, an alarm silencing switch, and a battery test switch.
- Remote monitoring relay: a relay is provided for remote alarm hook-up, plus a 1/2" access port.
- Refrigeration: single-stage system with one hermetic compressor, an air-cooled condenser, and CFC- and HCFC-free refrigerant.
- Storage capacity: 792 L interior with four adjustable shelves, five compartments, and capacity for 30 racks.
- Validated performance: every freezer is tested for 7 days under demanding conditions and holds a constant low setpoint in warm +30°C ambient environments.
How to Choose the Right Low-Temp Freezer
Matching a low-temperature freezer to a lab means weighing storage volume against temperature needs, site power, and floor space. Review these axes before specifying a unit.
- Temperature range: confirm your samples stay viable within 0°C to -40°C; reagents, tissues, and enzymes each have distinct setpoint requirements.
- Capacity and shelving: a 28 cu.ft. / 792 L chamber with adjustable shelves and 30-rack capacity suits high-throughput biorepositories and shared core labs.
- Control type: a microprocessor digital controller with dual displays lets technicians verify set versus actual temperature at a glance during audits.
- Voltage and power: verify your circuit matches the available 115V, 208V, 230V at 60 Hz, or 220V at 50/60 Hz single-phase configuration.
- Footprint: measure doorways and aisles against the 54" × 37" × 79.5" exterior and 1,125 lb weight before installation.
- Sample protection: battery alarm back-up, remote alarm relay, and optional CO₂/LN₂ back-up guard contents during failures.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 28 cu.ft. |
| Temperature Range | 0°C to -40°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 two displays — one shows the set temperature, the other the actual chamber temperature |
| Refrigeration System | Single-stage system with one hermetic compressor |
| Refrigerant | CFC- & HCFC-free |
| Condenser | Air-cooled; 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 |
| Performance Testing | Every freezer is fully tested for 7 days under demanding conditions; constant low setpoint guaranteed in warm (+30°C) ambient environments |
| 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) | 797059930159 |
| Shipping Weight | 1125 lbs |
| Dimensions (L × W × H) | 101 × 43 × 53 in |
| Component Size | 28 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| LTF-901U | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every LTF901U ships as a genuine unit backed by the manufacturer warranty. Our lab-equipment specialists answer spec and configuration questions directly so your order is right the first time.
- Authorized Yamato Scientific dealer: genuine freezer with full manufacturer warranty.
- In stock: ready to order now, no waiting list.
- Ships from USA inventory: domestic fulfillment for faster delivery.
- Lab-equipment specialists: dedicated support for spec, voltage, and accessory questions.
Frequently Asked Questions
What temperature range does the LTF901U maintain?
The LTF901U holds a range of 0°C to -40°C. A single-stage refrigeration system with one hermetic compressor and a microprocessor digital controller maintains the setpoint, and the unit is validated to hold a constant low setpoint even in warm +30°C ambient environments.
How much storage capacity and shelving does this freezer offer?
This freezer provides 28 cu.ft. (792 L) of interior capacity. It includes four adjustable shelves creating five compartments and accommodates up to 30 racks. Interior dimensions are 38" × 25" × 51.25" (96 × 63 × 130 cm).
What electrical supply does the LTF901U require?
The LTF901U is available in 115V, 208V, and 230V at 60 Hz single-phase, plus 220V at 50/60 Hz single-phase. Confirm your facility circuit matches the selected voltage before installation.
What materials is the freezer built from?
The chamber is 14-gauge zinc-coated galvanized steel. The exterior is 16-gauge steel finished in powder-coated cool gray. An air-cooled condenser is used, so no liquid coolant is required.
What alarm and monitoring features are included?
A battery-operated alarm emits both audible and visual signals on mechanical or electrical failure. It includes over- and under-temperature settings, an alarm silencing switch, and a battery test switch, plus a relay for remote alarm hook-up and a 1/2" access port.
What are the exterior dimensions and shipping weight?
Exterior dimensions are 54" × 37" × 79.5" (137 × 93 × 201 cm), and the unit weighs 1,125 lbs. Measure doorways, aisles, and the installation area before delivery. The freezer is UL Listed and made in the USA.