Zhongke Duling MDF-86V588B Ultra-Low Temperature Freezer
| Brand | Zhongke Duling |
|---|---|
| Origin | Anhui, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | MDF-86V588B |
| Instrument Type | Upright |
| Effective Volume | 588 L |
| Interior Dimensions (W×D×H) | 606 × 738 × 1310 mm |
| Exterior Dimensions (W×D×H) | 891 × 1155 × 1994.5 mm |
| Power Supply | 220 V / 50 Hz |
| Rated Power Consumption | 500 W |
Overview
The Zhongke Duling MDF-86V588B Ultra-Low Temperature Freezer is an upright, energy-efficient cryogenic storage system engineered for long-term preservation of thermolabile biological specimens and sensitive materials at sustained temperatures down to –86 °C. Utilizing hydrocarbon-based refrigerant technology with inverter-driven compressors, the unit delivers stable thermal performance while minimizing environmental impact and operational noise. Its robust insulation architecture—comprising high-density polyurethane foam with vacuum panel enhancement—ensures uniform temperature distribution across the entire chamber and reduces thermal leakage during frequent door access. Designed for continuous operation in regulated laboratory environments, the MDF-86V588B meets critical requirements for sample integrity in biobanking, clinical diagnostics, vaccine development, and preclinical research workflows.
Key Features
- Hydrocarbon (HC) refrigeration system with variable-speed inverter compressors for precise temperature control and reduced energy consumption.
- Triple-layer insulated door with magnetic seal and anti-condensation heater to prevent frost accumulation and maintain internal stability.
- Microprocessor-based digital controller with real-time temperature monitoring, adjustable setpoint range (–40 °C to –86 °C), and ±1 °C uniformity specification across the working volume.
- Redundant safety alarms including high/low temperature deviation, door ajar, power failure, and compressor fault detection with visual and audible alerts.
- Stainless steel interior chamber (304 grade) with rounded corners and seamless welds for easy cleaning and compliance with biosafety standards.
- Integrated data logging capability supporting time-stamped temperature records for audit readiness under GLP and GMP frameworks.
Sample Compatibility & Compliance
The MDF-86V588B is validated for storage of diverse biospecimens including whole blood, PBMCs, plasma, serum, cryopreserved tissues (e.g., skin, bone), microbial cultures, viral vectors, nucleic acids (DNA/RNA), and primary cell lines. It supports cold-chain continuity for WHO-prequalified vaccines and EU Annex 1-compliant biologics manufacturing. Regulatory documentation includes Class II Medical Device Registration Certificate (NMPA), Medical Device Manufacturing License, ISO 9001:2015, ISO 13485:2016, ISO 14001:2015, and ISO 45001:2018 certifications. The unit adheres to IEC 61010-1 safety standards for laboratory equipment and incorporates features aligned with FDA 21 CFR Part 11 data integrity expectations where integrated logging is enabled.
Software & Data Management
While the base configuration operates via embedded firmware with local display and keypad interface, optional RS485 or Ethernet connectivity enables integration into centralized laboratory infrastructure management systems (LIMS). Temperature logs are stored internally for ≥30 days (configurable retention) and exportable via USB port in CSV format. Audit trail functionality captures user actions—including setpoint modifications, alarm acknowledgments, and door-open events—with timestamps and operator identifiers when paired with external authentication modules. All firmware updates follow version-controlled release protocols compliant with medical device software lifecycle requirements per IEC 62304.
Applications
- Clinical biobanking: Long-term archiving of human biospecimens under ISO 20387-accredited conditions.
- Virology and immunology labs: Storage of live-attenuated virus stocks, monoclonal antibodies, and antigen preparations requiring strict thermal history control.
- Transfusion medicine: Preservation of cord blood units, hematopoietic stem cells, and erythrocyte concentrates per AABB and CAP guidelines.
- Pharmaceutical R&D: Stability testing of biologics intermediates and final drug substances at ultra-low temperatures.
- Electronics and material science: Cryogenic conditioning of semiconductors, superconductors, and specialty polymers prior to characterization.
FAQ
What is the minimum achievable temperature and how is it maintained?
The unit achieves and maintains a nominal operating temperature of –86 °C using a cascade refrigeration system with hydrocarbon refrigerants (R290/R170), supported by adaptive inverter control and high-efficiency heat exchangers.
Is remote monitoring supported out of the box?
Standard configuration includes local display only; remote monitoring requires optional communication module installation and third-party platform integration.
Does the freezer comply with international shipping and installation requirements?
Yes—the unit is CE-marked for export, supplied with voltage-compatible components (220 V / 50 Hz), and includes leveling feet, transport brackets, and shock-absorbing packaging per ISTA 3A standards.
How frequently should preventive maintenance be performed?
Zhongke Duling recommends quarterly inspection of condenser coils, annual calibration verification of temperature sensors, and biennial compressor performance evaluation per ISO/IEC 17025 traceable procedures.
Can the interior be customized with shelving or racks?
The standard configuration includes adjustable stainless steel shelves; custom rack systems compatible with ANSI/SLAS microplate and cryobox formats are available upon request.
