Tianfeng TF-86-258D-WA Digital Display Industrial Ultra-Low Temperature Freezer

Overview

The Tianfeng TF-86-258D-WA Digital Display Industrial Ultra-Low Temperature Freezer is an engineered solution for long-term cryogenic storage of biologics, clinical specimens, and temperature-sensitive materials at sustained temperatures between –40 °C and –86 °C. Designed for laboratory and industrial environments where reliability, energy efficiency, and operational resilience are critical, this unit employs a dual-stage cascade refrigeration system with imported compressors and internationally certified components. Its thermodynamic architecture integrates both natural convection and forced-air condenser cooling—ensuring stable operation even under elevated ambient temperatures (up to 35 °C) or in dusty, non-climate-controlled facilities. The stainless-steel interior, radius-corner construction, and triple-insulated door seals minimize thermal leakage while facilitating GMP-compliant cleaning protocols. Unlike consumer-grade units, the TF-86-258D-WA meets structural and performance requirements aligned with ISO 13485–certified medical device storage workflows and supports audit-ready documentation when configured with optional RS-232 data logging.

Key Features

• Stainless-steel inner chamber and doors (AISI 304), corrosion-resistant and compatible with ethanol/isopropanol disinfection
• Dual-mode condenser cooling: hybrid design combining passive convection and fan-assisted airflow—reduces risk of compressor overload during particulate accumulation
• Four independently sealed inner doors with magnetic gaskets, minimizing cold loss during frequent access
• Adjustable three-tier wire shelving system with load-rated support (max. 30 kg per shelf)
• Microprocessor-based digital controller with high-precision Pt100 sensor (±0.3 °C accuracy across operating range)
• Acoustic optimization yielding ≤57 dB(A) at 1 m distance—suitable for shared lab spaces and cleanroom-adjacent zones
• Non-CFC/HCFC refrigerant blend (R23/R508B) compliant with Montreal Protocol Annexes and EU F-Gas Regulation (EC No. 517/2014)
• Integrated mechanical door lock and power switch lock—prevents unauthorized access and accidental power interruption
• Removable, washable condenser dust filter—designed for rapid maintenance without tools
• Full-height cabinet (1095 mm) optimized for standard laboratory doorways; total unit height including casters: 1890 mm

Sample Compatibility & Compliance

The TF-86-258D-WA maintains thermal uniformity (±3 °C max. deviation within working volume per IEC 61000-4-2) across its 258 L usable capacity, validated for storage of primary human cells (e.g., PBMCs, stem cells), viral vectors, monoclonal antibodies, plasma fractions, and lyophilized reagents. It conforms to key regulatory expectations for biospecimen integrity, including CLSI GP44-A4 (storage of biological materials), AABB Standards for Blood Banks (Section 5.5.1), and WHO Technical Report Series No. 961 (Annex 9: Storage of Vaccines). While not FDA 510(k)-cleared as a medical device, its design aligns with ISO 14644-1 Class 8 cleanroom-compatible installation practices and supports GLP/GMP documentation workflows when paired with external temperature mapping and alarm logging systems.

Software & Data Management

The freezer incorporates a built-in digital display interface with real-time temperature readout, setpoint adjustment, and configurable alarm thresholds (high/low temperature, door open, power failure). Optional RS-232 serial output enables integration with centralized environmental monitoring systems (EMS) such as Sartorius Cubis® EMS or Sensiplus™ platforms. Data export supports CSV-formatted time-stamped logs (interval: 1–60 min), suitable for 21 CFR Part 11–compliant audit trails when used with validated third-party software and user-access controls. Alarm events trigger visual indicators and relay outputs for connection to building management systems (BMS), supporting automated incident escalation per institutional SOPs.

Applications

This ultra-low temperature freezer serves mission-critical roles across multiple sectors: biobanking (human tissue, genomic DNA, RNA isolates), clinical diagnostics (serum panels, CSF samples), vaccine logistics (mRNA stability preservation), pharmaceutical R&D (protein formulation screening), and materials science (low-temperature characterization of superconductors or polymers). Its robust thermal recovery (50 samples/day. End users include blood banks, CDC-affiliated public health laboratories, contract research organizations (CROs), academic core facilities, and biotech manufacturing sites requiring ISO 13485-aligned cold chain infrastructure.

FAQ

What is the recommended ambient operating temperature range?
The unit is rated for continuous operation in ambient conditions of 10 °C to 35 °C, with relative humidity ≤80% non-condensing.
How often should the condenser filter be cleaned?
Inspect weekly in standard lab environments; clean every 2–4 weeks depending on airborne particulate load. Use compressed air or soft brush—never solvents.
Can the freezer be installed in a confined space?
Yes, but maintain ≥100 mm clearance on all sides and ≥300 mm above for unimpeded airflow and service access.
Is remote monitoring supported natively?
No native Ethernet or Wi-Fi; RS-232 interface requires external converter for TCP/IP integration.
Does the unit comply with electromagnetic compatibility (EMC) standards?
Yes—tested to IEC 61326-1:2013 (industrial environment) for emissions and immunity.
What validation documentation is provided?
Factory calibration certificate (Pt100 sensor), electrical safety test report (IEC 61010-1), and insulation resistance verification are included. IQ/OQ protocols available upon request.