Tianfeng TF-SFD-35m² Industrial-Scale Freeze Dryer

Overview

The Tianfeng TF-SFD-35m² Industrial-Scale Freeze Dryer is a fully integrated, cGMP-A compliant lyophilization system engineered for high-reliability production of sterile active pharmaceutical ingredients (APIs), botanical extracts, and thermolabile biologics. Based on the principle of sublimation under controlled low-pressure and cryogenic conditions, this freeze dryer removes water from frozen samples via primary drying (sublimation) followed by secondary drying (desorption), preserving structural integrity, biological activity, and chemical stability without phase transition through liquid state. Its 36 m² total shelf area — comprising eleven precision-machined AISI 304 stainless steel shelves (10 operational + 1 spare) — supports batch processing of up to 600 kg of raw material per cycle. The system integrates a high-capacity condenser operating at –75 °C with 750 kg/24h ice-trapping capacity, enabling continuous operation across multi-batch campaigns in API manufacturing, nutraceutical processing (e.g., chrysanthemum flower, banana slice, and herbal extract lyophilization), and diagnostic reagent stabilization.

Key Features

• Monolithic structural design with full AISI 304 stainless steel chamber and shelves, featuring electropolished internal surfaces, zero-dead-angle geometry, and stress-relieved welding to eliminate crevices and support cleanability per ISO 14644-1 Class 5 requirements.
• Precision thermal oil circulation system delivering uniform shelf temperature distribution (±0.5 °C) across the full range of –55 °C to +70 °C, ensuring reproducible freezing, annealing, and desorption profiles.
• High-efficiency dual-stage vacuum system achieving ultimate pressure ≤1.0 Pa, validated with calibrated Pirani and capacitance manometers traceable to NIST standards.
• OMRON PLC-based control architecture with embedded recipe management, real-time data logging, alarm history, and audit trail functionality aligned with FDA 21 CFR Part 11 expectations for electronic records and signatures.
• Integrated cooling water interface (70 m³/hr @ ≤25 °C inlet) designed for industrial utility integration, supporting stable refrigeration performance under ambient load variations.
• Full-system qualification documentation package available (DQ/IQ/OQ/PQ), including FAT/SAT protocols, calibration certificates, and material traceability reports for all critical components.

Sample Compatibility & Compliance

The TF-SFD-35m² accommodates standard ISO 9001-certified stainless steel trays (600 × 400 mm or custom dimensions), glass vials (10–100 mL), and aluminum pans used in API fill-finish lines. It supports lyophilization of aqueous solutions, suspensions, and viscous botanical extracts with solids content ranging from 2% to 40% w/w. All wetted parts comply with USP and EP 3.1.1 material compatibility guidelines. The equipment is constructed and documented per cGMP-A Annex 1 (2022) requirements for sterile process equipment, including leak-tested chamber integrity (≤0.1 mbar·L/s He leak rate), validated steam-in-place (SIP) readiness, and non-porous surface finish (Ra ≤ 0.8 µm). Full compliance with ISO 9001:2015 quality management systems is certified by TÜV Rheinland.

Software & Data Management

The system runs on a dedicated Windows-based HMI with OMRON NX-series PLC firmware, supporting up to 500 configurable process recipes with version-controlled parameter sets (shelf temp ramp rates, hold times, vacuum setpoints, condenser defrost cycles). All operational data — including shelf temperature, chamber pressure, condenser temperature, and vacuum pump status — are logged at 1-second intervals and stored in encrypted .CSV and SQL formats. Audit trails record user login/logout events, parameter modifications, and alarm acknowledgments with timestamp, operator ID, and reason-for-change fields. Optional 21 CFR Part 11 compliance modules include electronic signature workflows, role-based access control (RBAC), and automated backup to network-attached storage (NAS) or cloud-hosted secure repositories.

Applications

This freeze dryer serves as a core unit in regulated pharmaceutical manufacturing (API lyophilization per ICH Q5C), clinical trial material production, and commercial-scale botanical processing. Typical use cases include: terminal sterilization-free stabilization of monoclonal antibodies and vaccine intermediates; dehydration of heat-sensitive herbal actives (e.g., flavonoids from chrysanthemum, polyphenols from banana pulp); preparation of sterile excipient blends for inhalation powders; and long-term preservation of microbial cultures and enzyme formulations. Its modular design allows seamless integration into automated fill-finish lines via programmable logic interfaces (PROFINET, Modbus TCP), supporting Industry 4.0-ready factory automation architectures.

FAQ

Is the TF-SFD-35m² suitable for GMP-compliant API manufacturing?
Yes — it is engineered to meet cGMP-A Annex 1 (2022), EU GMP, and WHO TRS 986 requirements, with full DQ/IQ/OQ/PQ support and 3Q documentation packages.
Can shelf temperature uniformity be validated per ASTM F2699-22?
Yes — thermal mapping protocols using calibrated PT100 sensors (±0.1 °C accuracy) are included in the IQ/OQ scope, with reporting aligned to ASTM F2699-22 and ISO 13485:2016 Annex C.
What level of vacuum measurement accuracy is guaranteed?
Chamber pressure is measured via dual-sensor redundancy: a Pirani gauge (1×10⁻³ to 1000 Pa) and a capacitance manometer (0.001–10 Pa), both calibrated annually per ISO/IEC 17025-accredited procedures.
Does the system support remote monitoring and predictive maintenance?
Standard Ethernet/IP and OPC UA interfaces enable integration with SCADA and CMMS platforms; optional vibration, current, and condenser delta-T analytics support condition-based maintenance planning.
Are engineering change notifications (ECNs) provided for hardware or firmware updates?
Yes — all ECNs are issued with impact assessments, revision-controlled documentation, and requalification guidance per ISO 9001 Clause 8.5.6.