ULT freezer ULF-31

for vaccineshospitalblood bank

Overview
The ULF-31 plasma blast freezer integrates a 425 L ultra-low-temperature storage unit with a dedicated 17 L rapid-freeze module to provide an end-to-end solution for fast freezing and long-term preservation of blood plasma and other temperature-sensitive biological materials. The storage unit maintains stable temperatures from -40°C to -86°C using forced-air cooling, dual compressors, an electronic controller and a high-precision PT1000 sensor. Interior construction uses SUS304 stainless steel, VIP vacuum insulation and eco-friendly refrigerants (R290/R170), delivering reliable storage performance for blood banks, plasma collection centers, hospitals, research laboratories and GMP-regulated facilities.

Rapid-freeze unit summary
The integrated rapid-freeze module extracts heat from freshly collected plasma prior to transfer to the storage chamber to preserve coagulation factors and other sensitive components. The auxiliary system has a circulating fluid volume of 17 L and operates from -80°C to room temperature. It features a dual-compressor refrigeration system, key-type microcontroller (LCD), PT100 sensor and a copper-tube + aluminum-fin heat exchanger for efficient heat transfer. Multiple safety alarms, corrosion-resistant construction and energy-efficient operation support continuous clinical and laboratory use.

Key advantages

• Integrated dual-unit system: 425 L storage unit combined with a dedicated 17 L rapid-freeze module.
• Fast freezing and stable long-term storage: rapid extraction of heat followed by controlled storage at -40°C to -86°C.
• Designed for clinical environments: SUS304 interior, VIP insulation, eco-friendly refrigerants and comprehensive safety alarms.

Features

• Integrated rapid-freezing and ultra-low-temperature storage system.
• Forced-air cooling for uniform temperature distribution throughout the chamber.
• Dual-compressor refrigeration for efficient cooling performance and operational reliability.
• High-precision PT1000 temperature sensor for the storage unit; PT100 for the quick-freeze module.
• Dedicated quick-freeze unit that rapidly extracts heat from plasma before transfer to storage.
• VIP vacuum insulation panels combined with rigid thermal insulation to minimize heat transfer and improve cooling efficiency.
• SUS304 stainless steel interior for corrosion resistance and easy cleaning.
• Eco-friendly refrigerants (R290/R170 for storage unit) supporting energy-efficient operation.
• Electronic temperature controller with digital display (storage unit) and key-type microcontroller with LCD (quick-freeze unit).
• Multiple safety alarms including high/low temperature, sensor error, door ajar and sensor fault alerts.
• Power-on delay function to protect the refrigeration system.
• Designed to operate reliably in high-temperature and high-humidity environments.
• Built-in key door lock and heavy-duty casters for security and mobility.

Applications

• Blood plasma preservation: rapid freezing and storage of fresh frozen plasma (FFP) to preserve coagulation factors and temperature-sensitive blood components.
• Blood banks & transfusion centers: supports plasma processing and long-term storage workflows.
• Clinical & hospital laboratories: ultra-low-temperature storage for plasma, biological specimens and diagnostic samples.
• Biomedical research: rapid freezing and secure preservation of biological samples for life sciences and biotechnology research.
• Vaccine & biopharmaceutical storage: suitable for temperature-sensitive vaccines and biological products requiring controlled ultra-low temperatures.
• Long-term biobanking: dependable preservation of valuable biological specimens under stable ultra-low-temperature conditions.

Standard accessories

• Storage unit accessories: 4 × casters, 2 × adjustable feet, padlock adapter kit, built-in key door lock.
• Quick-freeze unit accessories: 4 × casters, integrated key lock.

Technical specifications

• Storage unit - Capacity: 425 L; Temperature range: -40°C to -86°C; Temperature sensor: PT1000; Controller: Electronic; Cooling mode: Forced air; Refrigerant: R290/R170; Compressors: 2 pcs; Shelves/drawers: 3 pcs; Refrigerant charge: 178 g; Rated power: 650 W; Daily consumption: 7.85 kWh/24h; Noise level: 45 dB; Display: Digital temperature display; Interior: SUS304 stainless steel; Exterior: Zinc-iron alloy with spray coating; Alarms: High/low temperature, sensor error, door ajar; Power supply: AC 220/110 V, 50/60 Hz; External dimensions (W×D×H): 750 × 988 × 2187 mm; Package dimensions (W×D×H): 840 × 1120 × 2280 mm; Net/gross weight: 365 / 405 kg.
• Quick-freeze unit - Circulating fluid volume: 17 L; Temperature range: -80°C to room temperature; Sensor: PT100; Controller: Key-type microcontroller; Refrigerant: R404/R23; Compressors: 2 pcs; Display: LCD; Heat exchanger: Copper tube + aluminum fin; Rated power: 4.9 kW; Noise level: 70–90 dB; Alarms: High temperature alert, sensor fault alert; Power supply: AC 380 V, 50/60 Hz; External dimensions (W×D×H): 810 × 710 × 1250 mm; Package dimensions (W×D×H): 900 × 800 × 1430 mm; Net/gross weight: 220 / 260 kg.