Tianfeng TF-SFD-5E Pharmaceutical-Grade Benchtop Freeze Dryer

Overview

The Tianfeng TF-SFD-5E is a pharmaceutical-grade, shelf-type freeze dryer engineered for pilot-scale lyophilization of thermolabile biopharmaceuticals, herbal extracts (e.g., carrot powder, Ganoderma lucidum), and sterile dosage forms. It operates on the principle of sublimation under deep vacuum and controlled low-temperature conditions: frozen aqueous samples are subjected to a pressure below the triple point of water (611 Pa), enabling ice to transition directly from solid to vapor without passing through the liquid phase. This preserves structural integrity, bioactivity, and chemical stability—critical for active pharmaceutical ingredients (APIs), botanical concentrates, and biological macromolecules. Designed for cGMP-compliant environments, the system integrates stainless steel (AISI 304) construction, electropolished internal surfaces, zero-dead-leg geometry, and validated thermal uniformity across all five primary shelves plus one auxiliary shelf—ensuring reproducible drying cycles across batch sizes up to 105 L of solution or 24,800 vials (Φ16 mm).

Key Features

• Five + one adjustable stainless steel shelves with precision-machined flatness (±0.1 mm/m), heated/cooled via low-viscosity silicone oil circulation for ±0.5 °C temperature uniformity across −55 °C to +70 °C operating range
• High-efficiency dual-stage cascade condenser maintaining −75 °C continuously; rated condensate capacity of 105 kg/24 h at ≤2.7 Pa ultimate vacuum
• Hermetically sealed chamber constructed from AISI 304 stainless steel with fully polished, radius-rounded internal corners and stress-relieved welded joints to eliminate microbial harborage zones
• PLC-based control system with HMI touchscreen interface, supporting multi-step programmable cycles, real-time data logging (timestamped, user-ID tagged), and audit trail functionality compliant with FDA 21 CFR Part 11 requirements
• Integrated leak rate monitoring (≤0.1 Pa·m³/s), automatic defrosting sequence, and pressure rise test (PRT) validation protocol embedded in standard firmware
• Compliance-ready architecture: designed and manufactured per ISO 9001:2015 quality management system; documentation package includes DQ/IQ/OQ protocols upon request

Sample Compatibility & Compliance

The TF-SFD-5E accommodates diverse sample formats including bulk solutions (up to 105 L), vials (Φ16 mm: 24,800 units; Φ22 mm: 12,700 units), trays, and ampoules. Its shelf configuration supports both stopperless and stoppered vial drying with optional hydraulic stoppering module integration. The system meets fundamental design criteria outlined in ISO 22042 (freeze-drying equipment), USP (lyophilization process validation), and EU Annex 1 (sterile manufacturing). All wetted parts conform to ASTM A240/A240M for 304 stainless steel; surface finish Ra ≤ 0.8 µm post-polishing. Full traceability of critical components—including imported vacuum pumps, solenoid valves, and PT100 sensors—is maintained throughout the supply chain.

Software & Data Management

The embedded PLC controller records all process-critical parameters—including shelf temperature, chamber pressure, condenser temperature, and elapsed time—at user-defined intervals (minimum 1 s). Data export is supported via USB and Ethernet (Modbus TCP/IP) to external SCADA or LIMS platforms. Electronic signatures, role-based access control (admin/operator/auditor), and immutable audit trails satisfy ALCOA+ principles. Optional software add-ons provide advanced cycle optimization (e.g., product temperature modeling via Pirani/thermocouple correlation), deviation alerting, and automated report generation aligned with ICH Q5C and Q5D stability guidelines.

Applications

This system is routinely deployed in R&D laboratories and small-batch GMP production facilities for: lyophilization of herbal extracts (e.g., carrot root powder, Lingzhi/Ganoderma spore powder); development of sterile injectables (lyophilized antibiotics, monoclonal antibody formulations); stabilization of diagnostic enzymes and vaccine candidates; and processing of cell culture supernatants containing exosomes or cytokines. Its robust thermal management and vacuum integrity enable consistent residual moisture control (<1.0% w/w) in final cakes—essential for long-term stability assessment per ICH Q1A(R2).

FAQ

Is the TF-SFD-5E suitable for regulatory submissions (e.g., FDA IND/MAA)?
Yes—the system’s design basis, material certifications, and documented qualification protocols (DQ/IQ/OQ) support inclusion in regulatory filings when executed under qualified site conditions.
Can shelf temperature be ramped independently per shelf?
No—shelves operate in synchronous mode to ensure uniform heat transfer; however, individual shelf temperature calibration and mapping are performed during IQ/OQ.
What vacuum pump options are compatible?
The unit ships with a certified two-stage oil-lubricated rotary vane pump; dry scroll or hybrid pumps may be integrated upon engineering review.
Does Tianfeng provide installation qualification (IQ) and operational qualification (OQ) support?
Yes—on-site IQ/OQ execution, 3Q documentation packages, and remote validation consulting are available as value-added services.
Is remote monitoring supported?
Standard Ethernet connectivity enables remote read-only access via secure VPN; full remote control requires additional cybersecurity assessment per site IT policy.