田枫 TF-86-50-LA Ultra Low Temperature Freezer

Overview

The Tianfeng TF-86-50-LA Ultra Low Temperature Freezer is an engineered solution for reliable long-term cryopreservation of biologics, clinical specimens, and temperature-sensitive research materials. Designed and manufactured in Shanghai under ISO 9001:2000–certified quality management systems, this 50 L upright freezer operates within a stable temperature range of –40 °C to –86 °C—optimized for applications requiring deep-cold storage without the complexity or cost of liquid nitrogen infrastructure. Its thermodynamic architecture integrates a high-efficiency imported ultra-low-temperature compressor unit with a hybrid condensation system: 50% natural convection and 50% forced-air cooling. This dual-mode design significantly enhances operational resilience in ambient environments up to 35 °C and in locations with elevated dust levels—common challenges in field laboratories, blood banks, and industrial QC facilities. The unit employs an environmentally compliant HFC-based refrigerant blend, eliminating ozone-depleting substances (CFCs/HCFCs) while maintaining consistent thermal performance across load cycles.

Key Features

• Stainless steel (AISI 304) inner chamber and interior doors—corrosion-resistant, non-porous, and compatible with routine disinfection protocols required under GLP and GMP frameworks
• Four independent inner doors minimize cold loss during partial access; each door seals independently to maintain chamber integrity
• Rounded internal corners and removable, height-adjustable stainless steel shelves (3-tier configuration) facilitate complete cleaning and reduce microbial retention points
• Dual mechanical locking system: physical door lock plus integrated power lock prevents unauthorized access and accidental power interruption
• Acoustic optimization yields ≤57 dB(A) operating noise—suitable for shared laboratory spaces and ISO Class 5–7 cleanroom-adjacent zones
• Hybrid condenser design ensures continued operation even if the forced-air section becomes partially obstructed—a critical reliability advantage over fully fan-cooled competitors
• RS-232 serial interface (optional) enables integration into centralized lab monitoring systems for remote temperature logging and alarm forwarding
• Comprehensive alarm suite: over-temperature, power failure, door ajar, and sensor fault detection—with visual and audible alerts meeting IEC 61000-4-2 ESD immunity requirements

Sample Compatibility & Compliance

The TF-86-50-LA is validated for storage of primary human biospecimens—including peripheral blood mononuclear cells (PBMCs), cord blood units, cryopreserved skin grafts, bacterial and fungal cultures, viral vectors, and vaccine intermediates. Its uniform temperature distribution (±2.5 °C at –80 °C, per internal mapping per ASTM F2697-22) supports compliance with ISO 20387:2018 (Biobanking), AABB Standards for Cellular Therapy, and USP environmental control benchmarks. The stainless steel interior meets FDA-recommended material criteria for contact surfaces in regulated biologics handling. All electrical components conform to IEC 61010-1 safety standards for laboratory equipment. No internal water lines or humidification systems are present—eliminating condensation-related contamination risks common in frost-free freezers.

Software & Data Management

While the base model features a microprocessor-based digital controller with LED display (setpoint, actual temperature, alarm status), the optional RS-232 interface allows connection to third-party data acquisition platforms such as LabVIEW, SCADA systems, or LIMS-compatible middleware. Users may configure automated temperature logging intervals (1–60 min), generate CSV-formatted audit trails, and trigger email/SMS alerts via external gateways. All logged data retains timestamping with UTC synchronization capability. The firmware supports 21 CFR Part 11–compliant audit trail generation when deployed with validated software layers—enabling traceability for FDA-inspected biorepositories and clinical trial sample archives.

Applications

• Cryostorage of hematopoietic stem cells, semen, and ovarian tissue in reproductive medicine clinics
• Long-term archiving of reference standards and calibration materials in metrology labs
• Stabilization of thermolabile enzymes, monoclonal antibodies, and mRNA-lipid nanoparticle formulations
• Field-deployable cold chain nodes for marine bioprospecting and Antarctic research stations
• Backup storage for –80 °C ultra-low freezers during maintenance downtime or facility upgrades
• Storage of electronic components (e.g., superconducting qubits, infrared sensors) requiring thermal stabilization prior to characterization

FAQ

What is the recommended ambient operating environment?
The unit is rated for continuous operation at ambient temperatures between 10 °C and 35 °C and relative humidity ≤80% non-condensing. Installation clearance: ≥100 mm rear, ≥50 mm sides, unobstructed top airflow path.

How frequently should preventive maintenance be performed?
Condenser cleaning every 3–6 months (depending on dust load); door gasket inspection quarterly; temperature mapping annually per ISO/IEC 17025 guidelines for accredited labs.

Can the freezer be validated for IQ/OQ/PQ protocols?
Yes—Tianfeng provides factory-issued calibration certificates (NIST-traceable PT100 sensors), and the unit’s mechanical design supports third-party qualification using standard thermocouple arrays and data loggers.

Is remote monitoring supported out-of-the-box?
No—remote monitoring requires external integration via the optional RS-232 port and user-supplied middleware. No built-in Ethernet/Wi-Fi module is included.

What is the warranty coverage and service response time?
Standard warranty: 12 months parts and labor, extendable to 36 months. Domestic service network covers all Tier-1–3 Chinese cities; international support provided via authorized distributors with 5-business-day on-site response guarantee.