Pilot Freeze Dryer - 20L
Pilot-scale 20L freeze dryer for lyophilization of biologics, pharmaceuticals, and food products with advanced temperature and vacuum control systems.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The Pilot Freeze Dryer - 20L is a benchtop lyophilization system designed for pilot-scale processing of biological materials, pharmaceuticals, and food products. This freeze dryer combines sublimation and desorption phases to remove water from frozen samples while preserving molecular structure and bioactivity. The 20-liter capacity accommodates larger batch processing requirements typical of production development and scale-up activities.
The system employs controlled temperature and vacuum conditions to facilitate the transition of ice directly to vapor, bypassing the liquid phase. This process maintains the integrity of temperature-sensitive compounds including proteins, vaccines, enzymes, and other biologics. The robust construction and advanced control systems provide reproducible processing parameters essential for method development and validation studies.
How It Works
Freeze drying operates through a three-phase process beginning with freezing the sample to temperatures below the eutectic point, typically -40°C to -80°C. During this phase, water in the sample forms ice crystals while dissolved solutes concentrate in the remaining liquid fraction. The freezing rate and final temperature determine ice crystal size and distribution, which affects the final product structure.
The primary drying phase occurs under high vacuum conditions (typically 50-100 mTorr) where ice crystals sublime directly to water vapor without melting. Heat is applied gradually through heated shelves or surfaces to provide the energy of sublimation while maintaining the product temperature below the collapse temperature. The sublimed water vapor travels to refrigerated condenser coils where it refreezes and is removed from the system.
Secondary drying removes residual bound water through desorption at slightly elevated temperatures under continued vacuum. This phase typically reduces moisture content to 1-5% depending on the product requirements. Temperature and vacuum profiles are carefully controlled throughout the process to prevent product collapse, melting, or degradation while maximizing drying efficiency.
Features & Benefits
Automation Level
- semi-automated
Research Domain
- Analytical Chemistry
- Food Science
- Materials Science
- Microbiology
- Pharmaceutical QC
Weight
- 300.0 kg
Dimensions
- L: 42.0 mm
- W: 43.6 mm
- H: 38.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Processing Capacity | 20-liter pilot-scale capacity | Research units typically offer 2-8L capacity | Accommodates larger batches needed for production development and scale-up validation studies |
| Installation Format | Benchtop configuration | Production systems often require dedicated floor space and utilities | Provides laboratory flexibility while maintaining pilot-scale processing capabilities |
| Control System | Advanced programmable controls | Entry-level models may have basic manual controls | Enables automated cycle execution with data logging for process validation and regulatory documentation |
| Construction Quality | Robust industrial-grade construction | Research models often have lighter-duty components | Supports continuous operation required for pilot production schedules and process development |
This pilot-scale freeze dryer bridges the gap between research-grade instruments and full production systems. The 20L capacity and advanced controls provide the processing volume and automation needed for method development while maintaining laboratory installation flexibility.
Practical Tips
Verify temperature sensor accuracy quarterly using certified reference thermometers at operating temperatures.
Why: Temperature accuracy is critical for maintaining product quality and preventing collapse during drying cycles.
Clean condenser coils monthly and check for ice buildup that can reduce sublimation efficiency.
Why: Clean condensers maintain optimal heat transfer and vapor capture rates throughout extended processing cycles.
Pre-freeze samples to at least -40°C before loading to ensure complete ice crystal formation.
Why: Proper pre-freezing prevents product collapse and ensures uniform drying throughout the sample matrix.
Monitor vacuum levels continuously during primary drying - rising pressure may indicate condenser capacity limitations.
Why: Vacuum stability directly affects sublimation rates and can indicate system performance issues requiring attention.
Record shelf temperature, chamber pressure, and condenser temperature at regular intervals throughout each cycle.
Why: Complete process documentation is essential for regulatory compliance and process validation studies.
Ensure proper ventilation around the unit and never bypass safety interlocks during operation.
Why: Freeze dryers generate heat and use high vacuum systems that require proper safety protocols to prevent injury.
Setup Guide
What’s in the Box
- Pilot Freeze Dryer - 20L main unit
- Vacuum pump system (typical)
- Temperature control system (typical)
- Sample shelves and accessories (typical)
- Power cables and connections (typical)
- User manual and documentation (typical)
- Performance qualification certificates (typical)
Warranty
ConductScience provides a comprehensive one-year manufacturer warranty covering parts and technical support. Extended service contracts and calibration services are available for ongoing system maintenance.
Compliance
What sample types are compatible with this freeze dryer system?
The system accommodates aqueous solutions, biologics, pharmaceuticals, and food products. Samples should be pre-frozen and compatible with high vacuum and controlled temperature conditions. Consult product datasheet for specific temperature and pressure operating ranges.
How long does a typical lyophilization cycle require?
Cycle times vary from 24-72 hours depending on sample composition, volume, and final moisture specifications. Primary drying typically accounts for 60-80% of total cycle time, with secondary drying completing moisture removal.
What maintenance procedures are required for optimal performance?
Regular maintenance includes vacuum pump oil changes, condenser coil cleaning, temperature sensor calibration, and leak testing. Preventive maintenance schedules should follow manufacturer recommendations for system longevity.
Can the system run unattended during overnight cycles?
Yes, the programmable control system and safety interlocks allow unattended operation. Automated data logging provides cycle documentation while alarm systems alert operators to any parameter deviations.
What data output formats are available for process documentation?
Consult product datasheet for specific data logging capabilities and export formats. Most systems provide temperature, pressure, and time data for regulatory documentation and process validation.
How does this compare to smaller benchtop freeze dryers?
The 20L capacity provides significantly larger batch processing than typical 2-8L benchtop units, making it suitable for pilot production and scale-up activities rather than just research-scale sample preparation.
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