Tianfeng TF-FD-1 Standard Benchtop Freeze Dryer
| Brand | Tianfeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Standard Shelf-Type Freeze Dryer |
| Application | Laboratory-Scale Lyophilization |
| Freeze-Drying Area | 0.12 m² |
| Ultimate Vacuum | <15 Pa (at no-load) |
| Condenser Temperature | <−50 °C |
| Ice Capacity | 3 kg/24 h |
| Power Consumption | 1100 W |
| Dimensions (W×D×H) | 370 × 650 × 360 mm |
| Chamber Material | 304 Stainless Steel |
| Control Interface | Touchscreen LCD with Real-Time Drying Curve Display |
| Refrigeration System | Single-Stage Cascade Compressor |
| Pre-freezing | In-situ via Shelf or External Freezer |
| Optional Accessories | Temperature Data Logger, Inert Gas Purge Valve, Eutectic Point Tester, Manual Stoppering Kit |
Overview
The Tianfeng TF-FD-1 Standard Benchtop Freeze Dryer is a compact, in-situ pre-freezing lyophilization system engineered for reproducible, low-temperature dehydration of thermolabile biological and pharmaceutical samples under high vacuum. It operates on the fundamental principle of sublimation—removing water directly from the frozen solid phase to vapor without passing through the liquid state—thereby preserving structural integrity, enzymatic activity, immunogenicity, and long-term stability of sensitive materials such as antibiotics, vaccines, yeast cultures, serum proteins, and sterile powder formulations for injection (lyophilized injectables). Designed specifically for laboratory-scale development, quality control testing, and small-batch production, the TF-FD-1 delivers precise process control within a footprint optimized for standard fume hoods or benchtop environments. Its −50 °C condenser temperature ensures efficient trapping of bulk water vapor, while the <15 Pa ultimate vacuum enables robust primary drying kinetics across diverse sample matrices—including aqueous buffers, cell suspensions, and low-concentration biologics.
Key Features
- In-situ shelf pre-freezing capability eliminates manual transfer between freezer and dryer, minimizing contamination risk and thermal shock to samples.
- Touchscreen LCD interface with real-time graphical display of chamber pressure, shelf temperature, condenser temperature, and drying progress curves—enabling intuitive process monitoring and empirical optimization.
- Single-stage cascade refrigeration system using environmentally compliant refrigerants delivers stable condenser performance at <−50 °C with low acoustic emissions and high thermal efficiency.
- Four-layer stainless steel (AISI 304) shelf assembly with uniform heat distribution; accommodates Φ200 mm sample trays (standard configuration), supporting scalable batch processing up to 0.12 m² active drying area.
- High-transparency acrylic observation door permits continuous visual assessment of ice morphology, sublimation front progression, and cake structure formation during drying.
- Integrated inert gas purge valve (optional) allows controlled backfilling with nitrogen or argon post-drying to prevent oxidation and support aseptic handling under ISO Class 5 conditions.
- Full 304 stainless steel interior construction ensures corrosion resistance, cleanability, and compliance with GLP laboratory hygiene standards.
Sample Compatibility & Compliance
The TF-FD-1 is validated for use with a broad spectrum of laboratory samples requiring structural and functional preservation: microbial cultures (e.g., Saccharomyces cerevisiae for strain banking), monoclonal antibody formulations, diagnostic reagents, reference standards, and sterile vial-based pharmaceutical intermediates. Its operating parameters align with critical regulatory expectations for lyophilization process development—particularly in alignment with ICH Q5C (stability of biotechnological/biological products), USP (compounding sterile preparations), and FDA guidance on lyophilized product characterization. While not certified to 21 CFR Part 11 out-of-the-box, the system supports audit-trail-capable data logging when paired with optional compliant temperature recorders. All electrical components meet CE safety directives; mechanical design conforms to ISO 13850 (emergency stop requirements) and ISO 14155 (good clinical practice for medical device trials involving biological specimens).
Software & Data Management
The embedded control firmware provides non-volatile storage of up to 10 user-defined drying protocols, each configurable with ramp rates, hold durations, pressure setpoints, and shelf temperature profiles. Real-time data export is supported via USB port in CSV format for downstream analysis in Excel, MATLAB, or statistical process control (SPC) platforms. Optional temperature data loggers (with NIST-traceable calibration certificates) enable full traceability of critical process parameters—essential for method validation, tech transfer, and regulatory submissions. The system architecture supports periodic firmware updates to maintain compatibility with evolving laboratory informatics ecosystems and cybersecurity best practices.
Applications
- Stabilization of live yeast and bacterial cultures for long-term cryobanking and strain preservation.
- Development and optimization of lyophilized formulations for parenteral delivery (e.g., powdered injectables, reconstitutable vaccines).
- Preparation of reference standards and calibrators used in QC laboratories for HPLC, ELISA, and mass spectrometry workflows.
- Drying of tissue homogenates, plasma fractions, and enzyme preparations prior to biochemical assay or proteomic profiling.
- Small-scale pilot runs supporting scale-up to industrial freeze dryers (e.g., mapping critical process parameters for QbD-based development).
- Academic research in food science (e.g., probiotic powder development), material science (aerogel precursor synthesis), and nanomedicine (liposome stabilization).
FAQ
What types of samples are compatible with the TF-FD-1?
The system is optimized for aqueous-based biologicals including microbial suspensions, protein solutions, serum, and buffer-formulated APIs. It is not recommended for high-boiling-point organic solvents (e.g., DMSO, ethylene glycol) without condenser upgrade.
Can the TF-FD-1 perform primary drying without external pre-freezing?
Yes—its in-situ shelf freezing function cools shelves to ≤−40 °C, sufficient for most aqueous formulations; however, samples with low eutectic points (<−45 °C) may require pre-freezing in a −80 °C ultra-low temperature freezer.
Is the vacuum pump included?
No—the TF-FD-1 requires an external oil-lubricated or dry scroll vacuum pump (recommended ultimate vacuum ≤1 Pa); pump selection must match required pumping speed for 0.12 m² load geometry.
How is shelf temperature controlled during drying?
Shelf temperature is regulated via PID-controlled silicone oil circulation; accuracy is ±1 °C across the operating range (−40 °C to +50 °C), ensuring uniform heat input during secondary drying phases.
Does the system support GMP-compliant documentation?
While the base unit lacks electronic signature or audit trail functionality, integration with third-party validated data loggers and SOP-driven operation enables compliance with ALCOA+ principles for laboratory records.
