Tianfeng TF-SFD-2E Industrial-Scale Freeze Dryer with 2 m² Shelf Area

Overview

The Tianfeng TF-SFD-2E is an industrial-scale, shelf-type freeze dryer engineered for reproducible, GMP-aligned lyophilization of heat-sensitive biopharmaceuticals, natural extracts, probiotics, and botanical concentrates. It operates on the fundamental principle of sublimation—removing water from frozen samples under deep vacuum while maintaining structural integrity and biological activity. Designed for pilot production and small-batch manufacturing, the system integrates a high-efficiency dual-stage refrigeration cycle, low-viscosity silicone oil thermal transfer medium, and a robust stainless-steel chamber conforming to pharmaceutical-grade surface finish standards. Its 2 m² shelf area supports scalable loading configurations—including vials (up to 10,000 × Φ16 mm or 5,000 × Φ22 mm), trays, and bulk solution volumes up to 40 L—enabling seamless transition from lab-scale process development to early commercial output.

Key Features

• AISI 304 stainless-steel chamber with fully polished, zero-dead-angle internal geometry—minimizing microbial retention and facilitating CIP/SIP compatibility.
• Five temperature-controlled shelves (4 working + 1 reference), uniformly heated via precision-calibrated silicone oil circulation; flatness tolerance ≤±0.15 mm/m per shelf to ensure consistent product drying kinetics.
• −75 °C condenser with 40 kg/24 h ice-trapping capacity, optimized for high-moisture botanical extracts and viscous natural concentrate solutions.
• Omron PLC-based control system with embedded recipe storage, real-time parameter logging (shelf temp, chamber pressure, condenser temp, vacuum level), and password-protected user access levels.
• Compliant with cGMP design principles: welded joints ground flush and electropolished; no crevices or uncleanable recesses; traceable material certifications for all wetted parts.
• Full 3Q validation support package available—including IQ/OQ protocols, calibration certificates for all critical sensors (PT100, capacitance manometer, thermocouples), and electronic audit trail generation per FDA 21 CFR Part 11 requirements.

Sample Compatibility & Compliance

The TF-SFD-2E accommodates diverse sample formats common in natural product processing: aqueous herbal extracts, enzyme-rich fermentation broths, polysaccharide gels, and protein-stabilized botanical suspensions. Its wide shelf temperature range (−55 to +80 °C) permits controlled primary drying of low-eutectic-point materials and secondary drying of hygroscopic powders. All structural and operational parameters align with ISO 22042 (freeze-drying equipment specifications), ASTM F2375 (pharmaceutical lyophilizer qualification), and Annex 1 (EU GMP) requirements for sterile process simulation readiness. The system’s leak rate (<0.025 Pa·m³/s) ensures stable vacuum maintenance during extended cycles—critical for preserving volatile terpenoids and thermolabile phytochemicals.

Software & Data Management

The integrated HMI interface provides intuitive navigation through preloaded drying protocols or custom stepwise programs (freeze, anneal, primary dry, secondary dry, purge). Process data—including time-stamped shelf temperature profiles, chamber pressure curves, and condenser load accumulation—is automatically saved in CSV and PDF formats with SHA-256 hash verification. Audit trails record operator ID, timestamp, parameter changes, and alarm events—fully compliant with GLP/GMP documentation standards. Optional Ethernet/IP or Modbus TCP connectivity enables integration into centralized MES or SCADA systems for enterprise-level batch record consolidation and remote monitoring.

Applications

• Stabilization of plant-derived actives (e.g., curcuminoids, resveratrol, anthocyanins) without solvent degradation or oxidation.
• Production of sterile-ready botanical injectables and nasal spray powders meeting USP environmental controls.
• Long-term preservation of lactic acid bacteria cultures and fungal mycelia for probiotic and fermentation starter applications.
• Concentration and stabilization of cold-pressed fruit/vegetable juices into functional food powders with retained enzymatic activity.
• Lyophilization of collagen hydrolysates, hyaluronic acid solutions, and other high-molecular-weight biopolymers requiring precise ice nucleation control.

FAQ

Does the TF-SFD-2E support automated stoppering post-lyophilization?
No—this model is configured as a standard shelf-type freeze dryer without in-chamber stoppering capability. For automatic stoppering, consider the TF-SFD-2E-SP variant with hydraulic stopper rod assembly and ISO 5-class laminar flow integration.
Can the system be validated for FDA submission?
Yes—Tianfeng provides full 3Q documentation packages, including factory-acceptance test (FAT) reports, sensor calibration records, and protocol templates aligned with ISPE Good Practice Guide for Lyophilization.
What refrigerant is used in the condenser and compressor system?
R404A refrigerant is employed in the dual-stage cascade condensing unit, selected for its low global warming potential (GWP) relative to R22 and compatibility with −75 °C operating temperatures.
Is remote diagnostics supported?
Yes—the PLC includes built-in Ethernet port with optional VNC-enabled remote desktop access for troubleshooting, provided customer network security policies permit inbound connections.
What maintenance intervals are recommended for sustained GMP compliance?
Oil change for the vacuum pump every 500 operating hours; silicone oil replacement in the shelf heating system every 3 years or 6,000 hours; annual recalibration of all Class A sensors by an ISO/IEC 17025-accredited third-party lab.