Biobank freezer MDF-DU303VXH-PE

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Product overview The TwinGuard ECO MDF-DU303VXH-PE is a next-generation dual-cooling ultra-low temperature (ULT) freezer rated to -86°C, engineered for secure storage of high-value biological samples. It uses natural hydrocarbon (HC) refrigerants and inverter compressors to improve energy performance and door-recovery speed. A 10.1-inch high-resolution LCD touchscreen on the door provides user control and data display with USB export.

Key features

• Dual independent cooling systems (TwinGuard) for redundancy
• Ultra-low temperature performance to -86°C
• Natural HC refrigerants and inverter compressors for improved efficiency
• 10.1-inch touchscreen, data logging and USB export
• Filterless design and compact footprint with chamfered edges

Sample protection — TwinGuard dual cooling
The TwinGuard system integrates two independent refrigeration circuits. If one circuit fails, the second can maintain the chamber at approximately -75°C to protect samples until service intervention, reducing risk to irreplaceable biological materials.

Performance and efficiency
Natural HC refrigerants combined with inverter-controlled compressors provide stable ultra-low temperature performance, fast recovery after door openings and lower energy consumption (documented reductions up to 20%* and in some configurations up to 50%* depending on conditions). Insulation uses PUF/VIP Plus to optimise thermal performance.

Control and monitoring
Door-mounted 10.1-inch touchscreen displays operating parameters and alarm status. Data logging with USB export enables temperature record transfer to a PC and graphical review of temperature history. Pt1000 sensor provides accurate monitoring.

Access control and security
Audit and access tracking record door openings and open-duration. Four locking methods are supported:

• PIN code
• Unique mechanical key
• Facial recognition (optional)
• Proximity card / NFC (optional)

Design and maintenance
Filterless construction reduces routine maintenance time. Chamfered cabinet edges minimise footprint in stacked or closely placed laboratory installations. Casters with two leveling feet facilitate positioning.

Accessories and options

• Temperature recorders: MTR-G85C-PE (circular), MTR-85H-PW (strip)
• Recorder housing: MDF-S3085-PW
• Liquid CO₂ emergency backup system: MDF-UB9-PW
• Communication modules: MTR-MODB1-PW (Modbus), MTR-420MA-PW (analog)

Related models

• MDF-DU503VXH-PE
• MDF-DU703VXH-PE

Technical specifications

• Brand: PHCbi
• Model: MDF-DU303VXH-PE
• Commercial series: TwinGuard ECO
• External dimensions (W x D x H): 670 x 882 x 1838 mm
• Internal dimensions (W x D x H): 490 x 600 x 1230 mm
• Volume: 360 L
• Net weight: 225 kg
• Capacity (2" boxes, aluminium racks): 288
• Operating temperature: -86 °C
• Setpoint range: -40 °C to -90 °C
• Control range: -40 °C to -86 °C
• Controller: Microcomputer control system
• Display: LCD digital (10.1-inch touchscreen on door)
• Temperature sensor: Pt1000
• Compressors: 2 x 550 W
• Refrigerant: Mixed HC refrigerant
• Insulation: PUF / VIP Plus, 80 mm
• Exterior material: Painted steel
• Interior material: Painted steel
• Outer doors: 1 (with lock)
• Inner doors: 2 (polystyrene)
• Access ports: 3 (rear / bottom), diameter 17 mm
• Casters / feet: 4 (2 leveling feet)
• Data logging / USB: Yes
• Alarm types (examples): Power failure, high temperature, low temperature
• Filter: Filterless design
• Power supply: 220 / 230 / 240 V, 50 Hz
• Noise level: 52 dB[A]