Tianfeng TF-FD-27S Multi-Manifold Laboratory Freeze Dryer
| Brand | Tianfeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Multi-Manifold Freeze Dryer |
| Application Scope | Laboratory-Scale R&D and Small-Batch Processing |
| Shelf Area | 0.27 m² |
| Ultimate Vacuum (No Load) | <15 Pa |
| Condenser Capacity | 6 kg/24 h |
| Condenser Temperature | <−80 °C |
| Power Supply | 220 V, 50 Hz |
| Power Consumption | 2200 W |
| Dimensions (H×W×D, excl. drying chamber) | 1200 × 550 × 870 mm |
| Sample Tray | Φ240 mm × 6 shelves |
| Available Flask Sizes | 50, 100, 250, 500, 1000 mL (up to 8 ports) |
| Real-Time Display | Shelf Temperature & Chamber Pressure Curves |
| Heating Control | Programmable Shelf Heating (for primary/secondary drying optimization) |
Overview
The Tianfeng TF-FD-27S Multi-Manifold Laboratory Freeze Dryer is a purpose-engineered lyophilization system designed for reproducible, scalable freeze-drying of thermolabile biologicals, herbal extracts (including Ophiocordyceps sinensis), pharmaceutical intermediates, and research-grade biomaterials. 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, oxidation, or structural collapse, this system preserves native conformation, bioactivity, and reconstitution fidelity. The TF-FD-27S employs a dual-stage cascade refrigeration architecture to achieve condenser temperatures below −80 °C—critical for efficient trapping of volatile solvents (e.g., ethanol, acetone) commonly used in botanical extract formulations. Its multi-manifold configuration enables parallel processing of up to eight individually sealed flasks, supporting comparative lyophilization studies, formulation screening, and small-batch production under consistent process conditions.
Key Features
- Stainless steel construction with reinforced borosilicate glass drying chamber for full visual monitoring of ice sublimation, cake formation, and endpoint detection.
- Dual-compressor cascade refrigeration system delivering stable condenser performance at ≤−80 °C—ensuring high capture efficiency for water and low-molecular-weight organic solvents.
- Multi-manifold design with eight independent stainless steel ports, each fitted with vacuum-tight stopcocks for selective flask isolation during loading/unloading or partial process interruption.
- Programmable shelf heating module with real-time PID control, enabling precise ramp/hold profiles for optimized primary and secondary drying phases.
- Integrated digital vacuum gauge and temperature sensors (shelf, condenser, chamber) feeding continuous data streams to the onboard controller.
- Compact footprint (1200 × 550 × 870 mm, excluding chamber) suitable for standard laboratory benchtop integration with optional external vacuum pump compatibility.
Sample Compatibility & Compliance
The TF-FD-27S accommodates diverse sample formats including vials (5–1000 mL), serum bottles, and custom containers mounted on Φ240 mm stainless steel shelves (6-layer configuration). It supports lyophilization of aqueous and solvent-based solutions common in traditional Chinese medicine (TCM) extraction—particularly those containing polysaccharides, nucleosides, and sterols found in *Cordyceps* species. The system meets foundational requirements for GLP-compliant documentation: time-stamped process logs (shelf temp, chamber pressure, condenser temp), user-accessible calibration records, and audit-trail-capable firmware (optional upgrade for 21 CFR Part 11 compliance). While not certified to ISO 22000 or ASTM F2476 out-of-the-box, its operational parameters align with lyophilization validation protocols referenced in USP , Ph. Eur. 2.9.40, and ICH Q5C guidelines for stability-indicating drying processes.
Software & Data Management
The embedded controller provides real-time graphical display of shelf temperature vs. time and chamber pressure vs. time—enabling immediate assessment of drying phase transitions (freezing completion, primary drying onset, endpoint detection). All operational data are logged at user-defined intervals (1–60 s) to internal flash memory and exportable via USB to CSV format for offline analysis in MATLAB, Python, or statistical process control (SPC) platforms. Optional PC-based software (Tianfeng LyoControl Suite) adds remote monitoring, multi-unit fleet management, automated report generation (PDF/Excel), and deviation alerting based on configurable thresholds—supporting IQ/OQ/PQ documentation workflows in regulated environments.
Applications
- Lyophilization of heat-sensitive biologics: monoclonal antibodies, recombinant enzymes, viral vectors, and live-attenuated vaccines.
- Stabilization of TCM extracts: *Ophiocordyceps sinensis*, *Panax ginseng*, *Cervus elaphus*, and *Dioscorea opposita*, preserving adenosine, cordycepin, and ginsenoside profiles.
- R&D-scale freeze-drying of diagnostic reagents, ELISA kits, and molecular assay standards requiring long-term ambient storage stability.
- Material science applications: porous scaffold fabrication for tissue engineering, aerogel precursor drying, and catalyst support matrix preparation.
- Food science research: dehydration of probiotic cultures, fruit pulp concentrates, and functional ingredient powders without Maillard browning or nutrient loss.
FAQ
What types of solvents can be safely lyophilized using the TF-FD-27S?
The −80 °C condenser enables effective capture of water, methanol, ethanol, and acetone. Chlorinated or highly volatile solvents (e.g., dichloromethane, diethyl ether) require additional cold trap staging and are not recommended without engineering review.
Is pre-freezing required before loading samples onto the shelves?
Pre-freezing is strongly advised for optimal cake morphology and drying uniformity. While the condenser can serve as a pre-freeze surface, dedicated ultra-low temperature freezers (≤−40 °C) yield superior nucleation control and reduced microcracking.
Can the system be validated for GMP manufacturing use?
As supplied, the TF-FD-27S supports installation qualification (IQ) and operational qualification (OQ). Performance qualification (PQ) requires user-defined load mapping, thermocouple placement per ASTM E2234, and cycle development per PDA Technical Report No. 37.
How is vacuum integrity maintained during multi-flask operation?
Each manifold port features a stainless steel stopcock with Viton® O-rings rated to 10⁻³ mbar. Leak rate is verified at <0.1 mbar·L/s after system evacuation—within acceptable limits for laboratory-scale lyophilization per ISO 13485 Annex C.
Does the unit include a built-in vacuum pump?
No. A compatible two-stage rotary vane or dry scroll vacuum pump (minimum 4 m³/h pumping speed, ultimate vacuum ≤1 × 10⁻² mbar) must be selected and installed externally per manufacturer specifications.
