Tianfeng TF-FD-27 Manifold Freeze Dryer with Stoppering Function

Overview

The Tianfeng TF-FD-27 Manifold Freeze Dryer with Stoppering Function is a laboratory-grade lyophilization system engineered for precise, reproducible freeze-drying of heat-sensitive biological and pharmaceutical materials. It operates on the principle of sublimation—removing water from frozen samples under high vacuum while maintaining temperatures below the eutectic point—thereby preserving structural integrity, enzymatic activity, immunogenicity, and long-term stability. Unlike conventional thermal drying methods that induce denaturation, oxidation, or collapse, this unit maintains sample morphology in a porous, sponge-like matrix, enabling rapid reconstitution without loss of bioactivity. Designed specifically for enzyme formulations, diagnostic reagents, vaccines, monoclonal antibodies, and other labile biologics, the TF-FD-27 supports GMP-aligned workflows through its robust architecture, stainless-steel condenser chamber, and traceable process control.

Key Features

• Dual-stage cascade refrigeration system achieves stable condenser temperatures below −80 °C, ensuring efficient capture of volatile solvents—including acetonitrile, methanol, and ethanol—commonly used in assay development and purification protocols.
• Manifold configuration with eight independently controllable ports (compatible with 50–1000 mL vials) enables parallel processing of heterogeneous samples under identical vacuum and temperature conditions, maximizing throughput and inter-batch consistency.
• Integrated stoppering function allows for in-situ sealing of vials post-lyophilization under inert gas (N₂ or argon), minimizing moisture ingress and oxidation during storage—critical for reference standards and clinical trial materials.
• High-transparency acrylic drying chamber with built-in LED illumination permits real-time visual monitoring of ice sublimation, cake formation, and endpoint detection without breaking vacuum.
• Touchscreen HMI with PID-controlled heating and cooling algorithms delivers programmable ramp-and-hold cycles; users can define multi-step drying profiles including primary drying (sublimation), secondary drying (desorption), and final annealing stages.
• Full 304 stainless-steel construction (condenser, manifold, and internal housing) ensures corrosion resistance, ease of cleaning, and compliance with ISO 14644-1 Class 7 cleanroom maintenance requirements.
• Equipped with a calibrated vacuum sensor (Pirani + capacitance manometer), automatic pressure regulation valve, and optional eutectic point tester to support method development per ICH Q5C and USP <1208> guidelines.

Sample Compatibility & Compliance

The TF-FD-27 accommodates a broad spectrum of aqueous and solvent-based formulations, including enzyme buffers, ELISA reagents, PCR master mixes, lyophilized cell culture media, and small-molecule APIs dissolved in mixed solvents. Its −80 °C condenser and 6 kg/24 h ice capacity make it suitable for samples containing up to 15% organic co-solvent by volume. The system meets mechanical safety standards per EN 61000-6-2 (EMC) and EN 61000-6-4, and supports audit-ready documentation when paired with an FDA 21 CFR Part 11-compliant data logger. All operational parameters—including shelf temperature, chamber pressure, condenser temperature, and elapsed time—are timestamped and exportable in CSV format for GLP/GMP validation reports.

Software & Data Management

The embedded control software records all critical process variables at user-defined intervals (1–60 seconds), generating time-stamped lyophilization curves for each run. Data is stored locally on internal flash memory (≥1000 runs) and exportable via USB port. Optional Ethernet connectivity enables remote monitoring and integration into centralized LIMS environments. When configured with the certified data logger, the system provides electronic signatures, user access levels (admin/operator), and immutable audit trails required for regulatory submissions to EMA, PMDA, and Health Canada. Process alarms—such as vacuum breach, condenser overload, or power interruption—are logged with cause codes and automatically trigger email/SMS notifications via external gateway.

Applications

This freeze dryer serves core functions across R&D, QC, and pilot-scale manufacturing: stabilization of diagnostic enzyme conjugates for lateral flow assays; preparation of lyophilized controls and calibrators for clinical chemistry analyzers; production of sterile-fill-ready vials for Phase I–II clinical supplies; long-term archiving of primary cell lines and microbial strains; and formulation screening of excipient blends for optimal cake structure and reconstitution kinetics. Its manifold design is especially advantageous for comparative lyo-cycle optimization studies involving multiple buffer compositions or cryoprotectant concentrations.

FAQ

Can the TF-FD-27 handle samples with organic solvents such as acetone or DMSO?
Yes—the dual-stage cascade refrigeration system and deep-cold condenser (<−80 °C) provide effective trapping of low-boiling-point solvents, provided total solvent loading remains within the 6 kg/24 h ice capacity limit.
Is in-chamber pre-freezing supported?
No—pre-freezing must be performed externally using a −80 °C ultra-low temperature freezer; the condenser is not rated for direct sample freezing due to thermal mass constraints.
What vial sizes are compatible with the manifold ports?
Standard configurations support 50 mL, 100 mL, 250 mL, 500 mL, and 1000 mL serum vials with rubber stoppers; custom adapters are available upon request.
Does the system comply with FDA 21 CFR Part 11 requirements?
Out-of-the-box compliance requires optional 21 CFR Part 11-enabled data logger with electronic signature module and role-based user authentication—configured during installation and validated per IQ/OQ protocols.
Can shelf temperature be controlled during primary drying?
No—this is a manifold-type system without heated shelves; temperature control is limited to condenser and chamber pressure regulation. For shelf-heated lyophilization, consider the TF-FD-18S series.