Tianfeng TF-FD-18 Standard Benchtop Freeze Dryer

Overview

The Tianfeng TF-FD-18 Standard Benchtop Freeze Dryer is a laboratory-scale lyophilization system engineered for reproducible, controlled freeze-drying of heat-sensitive biologicals, pharmaceuticals, and research-grade materials. It operates on the fundamental principle of sublimation—removing water from frozen samples under deep vacuum while maintaining product integrity below the eutectic temperature. Unlike conventional thermal drying methods that induce denaturation, shrinkage, or oxidation, this system preserves native conformation, enzymatic activity, immunogenicity, and reconstitution fidelity. Its −60 °C condenser enables efficient vapor capture during primary drying, while the 0.18 m² shelf area supports scalable batch processing of vials, trays, or flasks. Designed for GxP-aligned environments, the TF-FD-18 meets baseline requirements for process documentation, traceability, and operational consistency in academic labs, QC/QA facilities, and early-stage bioprocess development.

Key Features

• Stainless steel 304 chamber construction with high-transparency acrylic observation door—enables real-time visual monitoring of ice morphology, cake structure, and drying front progression.
• In-situ pre-freezing via integrated condenser—eliminates manual transfer between freezer and dryer, minimizing contamination risk and thermal shock to samples.
• Touchscreen LCD interface with graphical drying curve display—supports real-time visualization of shelf temperature, chamber pressure, and condenser temperature; PID-controlled heating ensures ±1 °C uniformity across shelves.
• Air-cooled cascade refrigeration system—delivers stable condenser performance at <−60 °C with low acoustic emission (<62 dB(A)) and high energy efficiency.
• Modular design with standardized interfaces—compatible with optional accessories including inert gas (N₂) purge valve, calibrated temperature data logger (21 CFR Part 11 compliant configuration available), and eutectic point measurement probe.
• Electropolished 304 stainless steel shelves—resistant to corrosion, easy to sanitize, and dimensionally stable under thermal cycling; accommodates four Φ240 mm sample trays.

Sample Compatibility & Compliance

The TF-FD-18 is validated for use with aqueous and low-concentration organic solvent formulations (e.g., ethanol/water mixtures ≤15% v/v). It accommodates standard serum vials (10–30 mL), Petri dishes, and custom trays. The system conforms to ISO 22042:2017 (freeze-dryer performance qualification) and supports alignment with USP , ASTM F2375-04 (lyophilization cycle validation), and EU Annex 1 (sterile manufacturing). While not certified for cGMP production, its architecture—including sealed refrigerant loops, non-volatile lubricants, and traceable calibration points—facilitates IQ/OQ execution and audit readiness for GLP-compliant laboratories.

Software & Data Management

The embedded control firmware logs timestamped records of shelf temperature, chamber pressure, condenser temperature, and elapsed time at user-defined intervals (1–60 s). Raw data exports to CSV format via USB port for offline analysis in MATLAB, Python, or statistical process control (SPC) platforms. Optional data logger units provide 21 CFR Part 11–compliant audit trails, electronic signatures, and role-based access control—suitable for regulated environments requiring full data integrity per ALCOA+ principles. All firmware updates are performed via secure USB protocol with version rollback capability.

Applications

This freeze dryer serves critical functions across multiple domains: stabilization of monoclonal antibodies, recombinant proteins, and viral vectors in preclinical formulation development; long-term preservation of bacterial/fungal cultures and cell lines without cryoprotectants; preparation of reference standards for analytical chemistry; dehydration of botanical extracts (e.g., ginseng, cordyceps) while retaining thermolabile glycosides and polysaccharides; and lyophilization of diagnostic reagents, ELISA kits, and molecular assay components. Its −60 °C condenser provides sufficient cold trap margin for routine aqueous buffers and mild organic co-solvents, making it suitable for academic proteomics, vaccine adjuvant research, and nanomaterial dispersion stabilization.

FAQ

What is the maximum sample volume per batch?
With four Φ240 mm trays, the TF-FD-18 accommodates up to ~1.8 L of liquid (assuming 5 mm fill depth), though optimal loading is 0.8–1.2 L to ensure uniform drying and avoid collapse.
Can the system handle solvents other than water?
Yes—low-boiling-point solvents such as acetone, methanol, or ethanol (≤15% v/v in aqueous matrix) may be processed; however, extended exposure to aggressive organics requires optional condenser coating and enhanced maintenance protocols.
Is in-chamber shelf heating available on this model?
No—the TF-FD-18 Standard Type lacks electric shelf heating; for controlled secondary drying with ramped shelf temperature profiles, the TF-FD-18S variant (with programmable silicon oil heating) is recommended.
What vacuum pump compatibility is required?
A two-stage rotary vane pump with ultimate vacuum ≤5 Pa and pumping speed ≥8 m³/h is recommended; dry scroll pumps are compatible but require additional inlet filtration for solvent-laden vapor streams.
Does the unit include validation documentation?
Factory-installed calibration certificates for temperature sensors and vacuum transducer are provided; full IQ/OQ documentation packages are available upon request for qualified laboratories.