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

Overview

The Tianfeng TF-FD-27S is a benchtop, in-situ freeze dryer engineered for reproducible, process-controlled lyophilization of heat-sensitive biological and pharmaceutical samples in research laboratories and early-stage development environments. It operates on the fundamental principle of sublimation—removing water from frozen materials under deep vacuum while maintaining product integrity below the eutectic temperature. Unlike conventional drying methods that apply thermal energy above 0 °C and induce denaturation, collapse, or oxidation, this system preserves native conformation, bioactivity, and reconstitution fidelity through low-temperature primary drying (<−40 °C shelf setpoint) followed by controlled secondary drying (up to 60 °C, programmable). The dual-stage cascade refrigeration architecture achieves condenser temperatures below −80 °C, enabling efficient capture of both aqueous and moderately volatile organic solvents (e.g., acetone, ethanol, tert-butanol), thereby expanding compatibility beyond aqueous-based formulations.

Key Features

• In-situ pre-freezing capability: Samples freeze directly on stainless steel shelves inside the drying chamber—eliminating manual transfer and minimizing thermal shock or contamination risk.
• Stoppering function: Integrated mechanical actuator enables sterile, vacuum-compatible stopper compression post-drying—critical for vial-based pharmaceutical and diagnostic applications requiring hermetic sealing under inert atmosphere.
• Programmable shelf heating: Silicone oil–circulated shelves deliver uniform thermal distribution (±1 °C accuracy) and support multi-step ramp/hold profiles for optimized primary and secondary drying phases.
• Real-time process monitoring: High-resolution touchscreen interface displays concurrent graphical plots of shelf temperature, chamber pressure, and condenser temperature—enabling immediate deviation detection and empirical protocol refinement.
• Robust construction: 304 stainless steel interior surfaces resist corrosion from aggressive buffers or residual solvents; high-transparency acrylic door permits unobstructed visual observation throughout the entire cycle.
• Compliance-ready architecture: Equipped with optional data logging (21 CFR Part 11–compliant audit trail when paired with certified software), pressure-controlled inert gas inlet valve (N₂ or argon), and configurable alarm thresholds for critical parameters (e.g., vacuum breach, condenser overload).

Sample Compatibility & Compliance

The TF-FD-27S accommodates standard Ø220 mm sample trays across three shelf levels, supporting common lab formats including glass vials (10–30 mL), serum bottles, and custom molds. Its −80 °C condenser and 6 kg/24 h ice capacity make it suitable for formulations containing up to 15% (v/v) miscible organic co-solvents—common in monoclonal antibody formulations, peptide APIs, and nucleic acid therapeutics. The system meets essential design and performance benchmarks aligned with ISO 22042:2016 (freeze dryer qualification), ASTM F2668 (lyophilization process validation guidance), and supports GLP/GMP-aligned workflows when integrated with validated documentation packages and electronic signature modules. All wetted parts comply with USP Class VI biocompatibility standards.

Software & Data Management

Embedded firmware provides full-cycle control logic, including automatic vacuum ramping, pressure modulation via feedback-controlled throttling valve, and adaptive shelf heating based on real-time pressure-temperature correlation. Optional PC-based software (Tianfeng LyoControl Suite) enables remote operation, export of CSV-formatted time-series datasets (shelf temp, chamber pressure, condenser temp, elapsed time), and generation of IQ/OQ/PQ-compliant validation reports. Audit trails record user login/logout events, parameter modifications, alarm triggers, and cycle start/stop timestamps—meeting FDA 21 CFR Part 11 requirements for electronic records and signatures when deployed with time-stamped digital certificates and role-based access controls.

Applications

• Pharmaceutical R&D: Stabilization of biologics (monoclonal antibodies, recombinant proteins, vaccines), small-molecule APIs with low thermal stability, and combination products requiring precise residual moisture control (<1.0% w/w).
• Diagnostic reagents: Lyophilization of enzyme-linked immunoassay (ELISA) kits, PCR master mixes, and lateral flow assay components without loss of sensitivity or shelf-life extension beyond 24 months.
• Cell and gene therapy: Processing of cryopreserved cell suspensions, viral vectors (AAV, lentivirus), and CRISPR-Cas ribonucleoprotein complexes under strictly defined thermal and vacuum profiles.
• Academic & translational research: Structural biology sample preparation (e.g., membrane protein crystals), microbiome banking (anaerobic bacterial consortia), and botanical extract stabilization (e.g., polyphenol-rich plant matrices).
• Regulatory submissions: Generation of process characterization data for ICH Q5C (stability), Q5A (viral clearance), and Q5D (cell substrate) guidelines—facilitating CMC section development for IND/IMPD filings.

FAQ

What is the maximum batch size supported by the TF-FD-27S?

The unit supports up to 0.11 m² of shelf area with three tiers, accommodating approximately 180 × 10 mL vials or 90 × 20 mL vials per run—optimized for pilot-scale process development rather than commercial manufacturing.
Can the system handle solvent-based formulations?

Yes—the <−80 °C condenser and high-capacity refrigeration circuit enable effective trapping of water and low-boiling-point organics such as methanol, acetonitrile, and ethyl acetate, provided total solvent load remains within the 6 kg/24 h ice capacity limit.
Is in-chamber pressure control available?

Standard configuration includes a solenoid-controlled inert gas inlet valve for controlled backfilling to atmospheric or sub-atmospheric pressures during stoppering or secondary drying—configurable via touchscreen interface.
Does the system support automated cycle development?

While fully manual protocol definition is standard, the embedded PID algorithm adapts shelf heating rates dynamically based on chamber pressure trends—reducing reliance on fixed ramp rates and improving consistency across variable load conditions.
What validation documentation is provided?

Factory acceptance test (FAT) reports, installation qualification (IQ) templates, and operational qualification (OQ) test protocols are supplied. Site-specific performance qualification (PQ) support is available upon request, including thermocouple mapping and vacuum leak testing procedures.