Upright Style Low Temperature Freezers 0°C To -40°C, 18 cu.ft., Manual Defrost Overview
The Upright Style Low Temperature Freezers 0°C To -40°C, 18 cu.ft., Manual Defrost (model LTF501U) is a Low-Temp Freezer from Yamato Scientific, supplied by LabSupplies.com, authorized dealer. Holding 18 cu.ft. across a 0°C to -40°C range, this upright unit arrives with a microprocessor digital controller, audible and visual alarms, remote alarm contacts, alarm battery backup, and a 1/2" access port for probes or cabling.
Built for daily sample protection, the chamber uses 14-gauge zinc-coated galvanized steel, while the exterior is 16-gauge steel finished in powder-coated cool gray. A single-stage refrigeration system with one hermetic compressor pairs with a CFC- and HCFC-free refrigerant and an air-cooled condenser that needs no liquid coolant. Four adjustable shelves create five compartments and accept up to 20 racks.
Power options cover 115V, 208V, and 230V at 60 Hz, plus 220V at 50/60 Hz, all 1-phase. Measuring 40" × 36" × 79.5" externally and weighing 900 lbs, the freezer is UL Listed and made in the USA. Every unit runs a 7-day test under demanding conditions, with a constant low setpoint guaranteed in warm +30°C ambient environments.
Key Features
- Dual digital display: microprocessor control shows set temperature on one display and actual chamber temperature on the other.
- Multi-stage alarm system: battery-operated audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, an alarm silencing switch, a battery test switch, and a relay for remote alarm hookup.
- Environment-conscious refrigeration: single-stage system with one hermetic compressor and a CFC- and HCFC-free refrigerant; air-cooled condenser requires no liquid coolant.
- 7-day factory testing: every freezer is fully tested for 7 days under demanding conditions, with a constant low setpoint guaranteed in warm +30°C ambient environments.
- Configurable storage: 505 L / 18 cu.ft. interior with 4 adjustable shelves forming 5 compartments and capacity for 20 racks.
- Access port: 1/2" port for routing probes, sensors, or cabling into the chamber.
How to Choose the Right Low-Temp Freezer
Selecting a laboratory low-temperature freezer means matching storage volume, temperature target, and site power to how your samples are handled. Use the criteria below to confirm the unit fits both your protocols and your facility.
- Capacity: match interior volume to your sample load and rack count. This model offers 505 L / 18 cu.ft. with room for up to 20 racks, so estimate future growth, not just current inventory.
- Temperature range: verify the freezer reaches your required setpoint. A 0°C to -40°C range suits many enzyme, reagent, and biological storage protocols that do not demand ultra-low -80°C conditions.
- Control type: dual digital readouts let staff confirm set and actual chamber temperatures at a glance, reducing the guesswork that analog dials introduce.
- Voltage and site power: confirm your outlet before ordering. Options span 115V, 208V, and 230V at 60 Hz plus 220V at 50/60 Hz, 1-phase.
- Footprint: measure doorways and floor space against the 40" × 36" × 79.5" exterior and 900 lb shipping weight before delivery.
- Safety and monitoring: a battery-backed alarm with remote relay contacts protects samples during power or compressor faults when no one is on site.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 18 cu.ft. |
| Temperature Range | 0°C to -40°C |
| Defrost | Manual |
| Interior Capacity | 505 L / 18 cu.ft. |
| Rack Capacity | 20 racks |
| Shelving | 4 adjustable shelves (5 compartments) |
| Interior Dimensions | 23" × 26" × 51.25" (58 × 66 × 130 cm) |
| Exterior Dimensions | 40" × 36" × 79.5" (101 × 91 × 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) | 797059930128 |
| Shipping Weight | 900 lbs |
| Dimensions (L × W × H) | 46 × 43 × 86 in |
| Component Size | 18 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| LTF-501U | EA | EA |
Documentation
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Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so the LTF501U arrives as a genuine factory unit backed by the manufacturer warranty. Order directly and ship from USA inventory.
- Authorized Yamato Scientific dealer: genuine unit with full manufacturer warranty.
- In stock: ready to process and ship from USA inventory.
- Made in the USA: domestically manufactured and UL Listed.
- Lab-equipment specialists: dedicated team available for freezer specification questions before you order.
Frequently Asked Questions
What temperature range does the LTF501U reach?
The LTF501U operates from 0°C to -40°C. A dual digital display shows both the set temperature and the actual chamber temperature, and the unit holds a constant low setpoint even in warm +30°C ambient environments.
How much storage capacity and how many racks does it hold?
Interior capacity is 505 L / 18 cu.ft. with room for up to 20 racks. Four adjustable shelves create five compartments, with interior dimensions of 23" × 26" × 51.25" (58 × 66 × 130 cm).
What are the electrical requirements?
The freezer supports 115V, 208V, and 230V at 60 Hz, plus 220V at 50/60 Hz, all 1-phase. Confirm your outlet voltage before ordering so the unit matches your facility power.
What materials are used in construction?
The chamber is built from 14-gauge zinc-coated galvanized steel. The exterior is 16-gauge steel with a powder-coated cool gray finish, and the air-cooled condenser requires no liquid coolant.
What are the exterior dimensions and shipping weight?
Exterior dimensions are 40" × 36" × 79.5" (101 × 91 × 201 cm), and the unit weighs 900 lbs. Measure doorways and floor space against these figures before delivery.
Does the freezer include an alarm system for sample protection?
Yes. A battery-operated alarm emits audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings, an alarm silencing switch, a battery test switch, and a relay for remote alarm hookup.