田枫 TF-LYO-0.5 Pharmaceutical-Grade Benchtop Freeze Dryer

Overview

The Tianfeng TF-LYO-0.5 is a pharmaceutical-grade, shelf-type freeze dryer engineered for pilot-scale lyophilization of thermolabile biopharmaceuticals, herbal extracts, nutraceuticals, and sterile parenterals. It operates on the fundamental principle of sublimation under deep vacuum: frozen product water transitions directly from solid to vapor phase without passing through liquid state, preserving structural integrity, biological activity, and chemical stability. Designed to meet stringent regulatory expectations for early-phase process development and small-batch GMP manufacturing, the system integrates a high-efficiency condenser, precision-controlled shelf temperature modulation, and robust vacuum management — all housed within an AISI 304 stainless steel chamber featuring fully polished, crevice-free internal geometry compliant with cGMP design guidelines (FDA Guidance for Industry: Sterile Drug Products Produced by Aseptic Processing, Annex 1).

Key Features

• Shelf area of 0.54 m² supports scalable processing of up to 5 kg (batch basis) of aqueous formulations — compatible with 2,250 units of 16 mm vials or 1,120 units of 22 mm vials per cycle.
• Condenser operating at −80 °C ensures rapid ice capture with a verified 24-hour ice capacity of 10 kg, minimizing vapor pressure rebound and maintaining stable sublimation conditions throughout extended cycles.
• Shelf temperature control range from −55 °C to +80 °C enables precise freezing, primary drying, and secondary drying profiling — critical for optimizing residual moisture content (<1.5% w/w typical) and collapse temperature margins.
• Hydraulic stoppering mechanism integrated into the chamber door assembly allows for in-situ, vacuum-compatible sealing of vials post-drying — eliminating exposure to ambient atmosphere and supporting aseptic continuity.
• All-welded AISI 304 chamber with electropolished interior surfaces, zero-radius internal corners, and stress-relieved shelf fabrication ensures cleanability, reduces microbial harborage risk, and complies with ISO 14644-1 Class 5 (ISO Class 5) environmental control prerequisites when installed in appropriate facilities.
• Omron PLC-based control architecture provides deterministic sequencing, real-time parameter logging, alarm management, and password-protected user access levels — fully auditable for GLP/GMP environments.

Sample Compatibility & Compliance

The TF-LYO-0.5 accommodates diverse sample formats including glass vials (16–22 mm diameter), serum bottles, and custom trays — ideal for R&D of injectables, botanical concentrates (e.g., green tea, black tea extracts), monoclonal antibody formulations, and live attenuated vaccines. Its mechanical and operational design conforms to ISO 9001:2015 quality management requirements. The system supports full qualification documentation (IQ/OQ/PQ), traceable calibration records, and audit-ready electronic logs meeting FDA 21 CFR Part 11 data integrity criteria when paired with validated software configuration. All wetted parts comply with USP material compatibility standards; silicone gaskets meet USP Class VI biocompatibility testing.

Software & Data Management

Equipped with an embedded microprocessor interface, the TF-LYO-0.5 stores and executes multi-step lyophilization protocols with programmable ramp rates, hold durations, pressure setpoints, and shelf temperature profiles. Process data — including chamber pressure, condenser temperature, shelf surface temperature (via calibrated Pt100 sensors), and elapsed time — are logged at user-defined intervals (default: 10 s) and exportable via USB to CSV format. Audit trails record operator ID, timestamp, parameter changes, and alarm events — enabling retrospective analysis and regulatory review. Optional Ethernet connectivity supports remote monitoring and integration into centralized MES/LIMS platforms under validated network configurations.

Applications

• Lyophilization of heat-sensitive APIs and biologics during preclinical and Phase I/II clinical supply manufacturing.
• Stabilization of herbal extracts (e.g., black tea polyphenols, catechins) while retaining antioxidant activity and volatile aroma compounds.
• Development of sterile powder formulations for reconstitution, including lyophilized probiotics and enzyme preparations.
• Process validation studies for freeze-drying cycle optimization, including determination of critical product temperatures (T_g’, T_c) using manometric temperature measurement (MTM) or tunable diode laser absorption spectroscopy (TDLAS) add-ons.
• Academic research in food science, pharmacognosy, and biomaterial engineering requiring reproducible, scalable dehydration under controlled thermal-vacuum conditions.

FAQ

Does the TF-LYO-0.5 support automated cycle development?
Yes — the PLC controller allows creation, storage, and recall of unlimited protocols with up to 50 steps per program, including conditional logic for pressure-controlled drying and shelf temperature ramping.
Is hydraulic stoppering compatible with ISO 5 cleanroom environments?
Yes — the stoppering actuator is sealed and mounted externally; no lubricants or moving parts penetrate the sterile boundary, satisfying Annex 1 requirements for contamination control.
What validation documentation is provided?
Standard delivery includes Factory Acceptance Test (FAT) report, material certifications (AISI 304, EPDM gaskets), electrical safety certification (IEC 61000-6-4), and IQ/OQ templates aligned with ASTM E2500 and EU GMP Annex 15.
Can shelf temperature uniformity be verified?
Yes — the system includes six calibrated Pt100 sensors per shelf (standard configuration); uniformity mapping per ISO 13408-1 is supported using NIST-traceable thermocouples during OQ.
What maintenance intervals are recommended for the Bitzer compressor and Baosi vacuum pump?
Compressor oil change every 4,000 operating hours; vacuum pump oil replacement every 500 hours or after 30 lyophilization cycles — documented in the preventive maintenance logbook supplied with the unit.