DELEITE VFD-12 Laboratory Benchtop Freeze Dryer

Overview

The DELEITE VFD-12 is a benchtop laboratory freeze dryer engineered for reproducible lyophilization of heat-sensitive biological, pharmaceutical, and analytical samples under controlled vacuum and sub-zero thermal conditions. It operates on the principle of sublimation—removing water from frozen samples by direct phase transition from solid ice to vapor under reduced pressure—without passing through the liquid phase. This preserves structural integrity, enzymatic activity, and chemical stability in proteins, vaccines, probiotics, botanical extracts, and calibration standards. The system integrates a high-efficiency air-cooled condenser, dual-stage rotary vane vacuum pump interface, and a T-style manifold configuration optimized for parallel processing of multiple flask-based samples. Its design prioritizes operational reliability, data traceability, and compliance readiness for academic research, QC/QA labs, and early-stage formulation development.

Key Features

• High-performance imported hermetic compressor delivering consistent condenser temperatures ≤−65 °C (no-load), enabling rapid ice capture and minimizing vapor backstreaming during primary drying.
• AISI 304 stainless steel condenser chamber with large-diameter opening—corrosion-resistant, easy-to-clean, and compatible with routine sterilization protocols required under GLP environments.
• Integrated pre-freezing capability: samples can be frozen directly in the condenser chamber prior to vacuum application, eliminating dependency on external ultra-low temperature freezers or cryogenic agents.
• 7-inch full-color TFT touchscreen HMI with real-time graphical display of critical process parameters—including condenser temperature, product temperature (via optional PT100 probe), vacuum pressure (Pirani gauge), elapsed time, and dynamic drying curves.
• Embedded industrial-grade operating system supporting ≥10,000 hours of continuous data logging; all records stored internally as timestamped Excel (.xlsx) files and exportable via USB 2.0 port without software installation.
• Intelligent vacuum pump control logic: pump activation is delayed until condenser reaches preset temperature threshold (configurable), preventing excessive water vapor ingress and extending pump oil service life.
• Electric resistive defrost function for condenser—enabling rapid manual or scheduled melt-cycle completion and reducing turnaround time between batches.
• KF-25 quick-connect vacuum interface ensures leak-tight, tool-free coupling between main unit and vacuum pump; compliant with ISO-KF standard dimensions and sealing practices.
• Stainless steel purge valve with integrated sintered metal filter—designed for inert gas backfill (N₂ or argon) and ensuring zero leakage during chamber venting operations.
• User-level access control with password-protected settings: administrator, operator, and viewer roles configurable to enforce procedural accountability in regulated settings.

Sample Compatibility & Compliance

The VFD-12 supports standard ground-glass jointed flasks (19/22 and 24/29 taper) across 250 mL and 500 mL capacities, accommodating up to eight vessels simultaneously. Its open manifold architecture allows heterogeneous sample types—including aqueous solutions, suspensions, and lyophilized reference materials—to be processed in parallel without cross-contamination risk. While not certified to ISO 22000 or FDA 21 CFR Part 11 out-of-the-box, the system’s deterministic data logging architecture, audit-ready timestamps, user authentication layer, and exportable structured datasets enable straightforward integration into validated workflows aligned with ICH Q5C, USP , and ISO 13485 quality management frameworks. All wetted surfaces conform to ASTM A240 and EN 10088-1 material specifications.

Software & Data Management

Data acquisition occurs at 1-second intervals across all monitored channels and is written non-volatilely to internal flash memory. Each batch generates a uniquely named .xlsx file containing columns for Time (hh:mm:ss), Condenser Temp (°C), Chamber Pressure (Pa), Optional Product Temp (°C), and System Status Flags. No proprietary software is required for review: files open natively in Microsoft Excel, LibreOffice Calc, or Python pandas for statistical analysis. USB export supports drag-and-drop transfer; no drivers or cloud dependencies are involved. Optional RS485 or Ethernet expansion modules (sold separately) permit integration with LIMS or SCADA platforms for centralized monitoring.

Applications

• Stabilization of monoclonal antibodies, recombinant enzymes, and viral vectors for long-term storage and transport.
• Preparation of sterile powder formulations for dissolution testing per USP .
• Concentration and preservation of environmental water samples prior to GC-MS or ICP-MS analysis.
• Routine dehydration of microbial cultures, tissue homogenates, and plant extracts for metabolomic profiling.
• Method development and cycle optimization studies supporting regulatory submissions under EMA CHMP or FDA CMC guidelines.
• Teaching laboratories requiring robust, low-maintenance instrumentation for undergraduate bioprocessing curricula.

FAQ

Does the VFD-12 include a vacuum pump?
No—the unit requires an external two-stage rotary vane vacuum pump (recommended ultimate vacuum ≤1 Pa, pumping speed ≥2 L/s). KF-25 connection hardware is included.
Can product temperature be monitored during drying?
Yes—via optional PT100 sensor probes installed in selected flasks; sensor inputs are supported in firmware and displayed alongside other parameters.
Is the system suitable for GMP manufacturing environments?
It is designed for R&D and QC use. For GMP production, additional validation documentation (IQ/OQ/PQ), 21 CFR Part 11-compliant electronic signatures, and alarm/event logging enhancements would be required.
What maintenance intervals are recommended?
Compressor oil inspection every 12 months; vacuum pump oil replacement every 500 operating hours; condenser cleaning after each 10–15 batches depending on sample load.
Can the freeze dryer operate continuously for extended cycles?
Yes—the embedded controller supports uninterrupted operation up to 120 hours; thermal protection circuits prevent overheating under sustained load.