Tianfeng TF-SFD-1E Benchtop Production-Scale Freeze Dryer

Overview

The Tianfeng TF-SFD-1E is a production-scale shelf-type freeze dryer engineered for reproducible, scalable lyophilization of heat-sensitive biopharmaceuticals, botanical extracts (including bamboo shoot powders and fruit particulates), diagnostic reagents, and nutraceutical formulations. It operates on the fundamental principle of sublimation: frozen aqueous matrices are subjected to deep vacuum (≤1 Pa), enabling ice to transition directly from solid to vapor without passing through the liquid phase. This preserves structural integrity, bioactivity, and reconstitution properties of labile compounds. Unlike laboratory-scale units, the TF-SFD-1E integrates process-critical engineering features—such as uniform shelf temperature distribution (±1.5 °C at −40 °C), high-capacity −75 °C condenser, and robust AISI 304 chamber construction—to support consistent batch output across pilot and small-volume commercial manufacturing environments.

Key Features

• 1 m² lyophilization area accommodates up to 3,900 vials (Φ16 mm) or 2,000 vials (Φ22 mm), or up to 20 L of bulk solution per cycle
• Five-shelf configuration (4 active + 1 bottom shelf) with precise 100 mm spacing and electropolished 450 × 600 mm stainless steel surfaces
• Shelf temperature control range from −55 °C to +80 °C, using low-viscosity silicone oil for rapid thermal response and minimal gradient deviation
• High-efficiency dual-stage refrigeration system achieving stable condenser temperature of −75 °C and 20 kg/24 h ice capture capacity
• Hermetically sealed AISI 304 chamber with full-radius internal corners, fully welded and polished joints—designed to eliminate microbial harborage points and facilitate cleaning validation
• Omron PLC-based control system with password-protected recipe management, real-time parameter logging, and alarm history with time stamps
• Compliance-ready architecture: pre-engineered for IQ/OQ/PQ execution, including calibration traceability, sensor redundancy options, and electronic signature support per FDA 21 CFR Part 11 guidelines

Sample Compatibility & Compliance

The TF-SFD-1E is validated for use with pharmaceutical intermediates, herbal concentrates (e.g., dehydrated bamboo shoot extracts), functional food matrices (e.g., berry granules, citrus powder), and diagnostic enzyme formulations. Its chamber geometry and shelf design accommodate both stoppered vials and tray-based bulk drying. All wetted surfaces meet ASME BPE surface finish standards (Ra ≤ 0.8 µm). The system conforms to ISO 9001:2015 quality management requirements and incorporates cGMP-aligned design elements—including leak rate ≤0.025 Pa·m³/s, pressure decay testing capability, and documented material certifications for all critical components. Optional GAMP 5-aligned validation documentation packages are available upon request.

Software & Data Management

Control logic resides in an Omron CP1E-N40DT-D PLC, programmed per IEC 61131-3 standards. The HMI interface provides intuitive navigation through cycle setup, real-time monitoring (shelf temp, chamber pressure, condenser load, elapsed time), and historical trend review. All process data—including setpoints, actual values, alarms, and operator actions—are logged with millisecond timestamps and stored internally for ≥12 months. Audit trails are immutable and exportable in CSV format. For regulated environments, optional software modules provide electronic signatures, role-based access control, and 21 CFR Part 11 compliance reporting templates.

Applications

• Stabilization of thermolabile APIs and peptide-based therapeutics under controlled primary and secondary drying phases
• Production of high-porosity fruit particulates (e.g., strawberry, mango, blueberry) retaining >92% anthocyanin content post-lyophilization
• Processing of traditional Chinese medicine (TCM) extracts—including bamboo shoot polysaccharides—without Maillard degradation
• Preparation of reference standards and calibration materials for QC laboratories requiring long-term stability and low moisture residual (<1.5% w/w)
• Supporting GLP-compliant stability studies per ICH Q1A(R2), with programmable ramp-hold profiles and environmental condition logging

FAQ

Is the TF-SFD-1E suitable for GMP manufacturing environments?
Yes—the unit is constructed to cGMP-aligned specifications, supports full validation protocols (IQ/OQ/PQ), and includes documentation packages required for regulatory submissions.
Can shelf temperature gradients be independently verified during operation?
Yes—each shelf is equipped with dual calibrated Pt100 sensors; temperature uniformity can be confirmed via mapping studies per ISO 13485 Annex A.
What vacuum measurement technology is used, and is it traceable to NIST standards?
A capacitance manometer (Baratron-type) with NIST-traceable calibration certificate is standard; optional Pirani gauge for rough vacuum monitoring.
Does the system support remote monitoring and alarm notification?
Via optional Ethernet module: real-time parameter streaming, email/SMS alerts on critical deviations, and secure web-based HMI access.
Are spare parts and consumables (e.g., silicone oil, O-rings, filter elements) stocked internationally?
Yes—Tianfeng maintains regional distribution hubs in Singapore, Germany, and the USA; lead time for critical spares is ≤5 business days.