Tianfeng TF-FD-27 Benchtop Freeze Dryer with Stoppering Function

Overview

The Tianfeng TF-FD-27 is a benchtop, in-situ freeze dryer engineered for precise, reproducible lyophilization of heat-sensitive biological and pharmaceutical samples in research laboratories and pilot-scale development environments. It operates on the fundamental principle of sublimation: water is removed from frozen samples under deep vacuum (<15 Pa) while maintaining product integrity below its eutectic and collapse temperatures. Unlike conventional drying methods that apply thermal energy above 0 °C—inducing denaturation, oxidation, or structural collapse—the TF-FD-27 enables primary drying at cryogenic conditions (≤ −40 °C shelf surface) and secondary drying at controlled, moderate temperatures (up to 60 °C), preserving native conformation, bioactivity, and reconstitution fidelity. Its −80 °C condenser temperature ensures high-efficiency capture of volatile solvents—including ethanol, acetone, and acetonitrile—making it suitable for formulations beyond aqueous systems, such as peptide conjugates or small-molecule APIs dissolved in mixed solvents.

Key Features

• Integrated in-situ pre-freezing: Samples are frozen directly on stainless steel shelves within the drying chamber, eliminating transfer-related contamination and thermal shock.
• Dual-stage cascade refrigeration system: Delivers stable condenser temperatures below −80 °C with high thermal efficiency and low acoustic emission (<62 dB(A)), supporting consistent ice trapping across extended cycles.
• Touchscreen HMI with real-time data logging: Displays dynamic vacuum profiles, shelf temperature curves, condenser load trends, and process time stamps; supports export of CSV-formatted datasets compliant with GLP audit requirements.
• Stoppering-capable chamber design: Equipped with a manually or hydraulically actuated stopper mechanism compatible with standard 22 mm serum vials, enabling aseptic closure post-drying without chamber venting.
• Full 304 stainless steel construction: Includes chamber walls, condenser, shelves, and door gasket housing—resistant to corrosion from organic solvents and compatible with validated cleaning-in-place (CIP) protocols.
• Programmable shelf heating: Precision silicon oil-based thermal medium provides ±1 °C uniformity across all three tiers, supporting controlled ramp-hold-dwell protocols per USP and ICH Q5C guidelines.
• Optional inert gas inlet valve: Enables nitrogen or argon backfilling to <0.5 mbar absolute pressure for oxygen-sensitive products, meeting stability requirements outlined in FDA Guidance for Industry: Container Closure Systems for Packaging Human Drugs and Biologics (2022).

Sample Compatibility & Compliance

The TF-FD-27 accommodates a broad spectrum of sample formats: bulk solutions in trays (max. 0.11 m² shelf area), individual vials (Φ220 mm footprint per tier), or multi-port manifold configurations (optional). It meets core performance benchmarks referenced in ISO 22057:2021 (freeze-drying equipment — terminology and performance criteria) and supports validation workflows aligned with ASTM F2375–22 (Standard Guide for Validation of Freeze Drying Processes). All electrical components comply with IEC 61010-1:2012 safety standards for laboratory equipment. The system’s architecture supports 21 CFR Part 11-compliant electronic records when paired with Tianfeng’s optional validated software package (TF-Lyosoft v3.2), including user access controls, audit trails, and electronic signatures.

Software & Data Management

The embedded controller logs timestamped process variables—including shelf temperature, chamber pressure, condenser temperature, and elapsed time—at configurable intervals (1–60 s). Data is stored locally on internal flash memory (≥16 GB) and exportable via USB port in ISO/IEC 27001-aligned encrypted format. Optional TF-Lyosoft v3.2 software provides remote monitoring, comparative batch analysis, deviation alerting (e.g., vacuum excursion >2 Pa for >30 s), and automated report generation in PDF/A-1b format. All data files include embedded metadata (operator ID, protocol name, version stamp) to satisfy ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).

Applications

This system is routinely deployed in academic life science labs for stabilizing monoclonal antibodies, plasmid DNA, CRISPR ribonucleoprotein complexes, and extracellular vesicles. In QC/QA settings, it supports reference standard preparation per USP , stability-indicating method development, and extractables/leachables sample conditioning. Industrial users leverage its solvent tolerance for lyophilizing polymer-drug conjugates, nanocrystal suspensions, and lyotropic liquid crystalline phases. Its compact footprint (1.2 m height) and CE-marked power supply make it suitable for ISO Class 5 cleanroom annexes and shared core facilities requiring GMP-aligned operation without dedicated HVAC infrastructure.

FAQ

What is the maximum sample volume per cycle?
With three 220 mm diameter shelves, the TF-FD-27 supports up to 1.5 L total solution volume (assuming 5 mm depth), or approximately 192 × 2 mL vials using standard tray spacing.
Can the system handle non-aqueous solvents?
Yes—the −80 °C condenser and 304 stainless steel cold trap enable efficient capture of methanol, acetonitrile, and ethyl acetate vapors; recommended maximum solvent concentration: ≤30% v/v in aqueous mixtures.
Is shelf temperature calibration traceable to NIST standards?
Each unit ships with a factory calibration certificate (ISO/IEC 17025-accredited lab); field recalibration kits with dual-junction PT100 probes are available upon request.
Does the stoppering function support automated cycle sequencing?
Manual stoppering mode is standard; hydraulic auto-stoppering requires optional TF-AS-27 actuator module and integration with TF-Lyosoft v3.2 for synchronized pressure-controlled insertion.
What maintenance intervals are recommended?
Oil change for cascade compressors every 6,000 operating hours; vacuum pump oil replacement every 500 hours; O-ring inspection and silicone grease reapplication every 12 months or after 200 cycles.