AELAB LGJ Silicon Oil Heating Freeze Dryer Series – Shelf Heating Pilot & Production Lyophilizer

LGJ-20F/30F/50F/100F (silicon oil heating) freeze dryer is AELAB patent machine, freezing and drying process made in situ. It changes the complex operation and prevents sample pollution and makes drying automation. These models have shelf heating and programmable functions. They can record freeze drying curves, data can be output by U-disk and user can clearly view the freeze drying process.

The AELAB LGJ Silicon Oil Heating Freeze Dryer Series integrates shelf heating, controlled condenser temperature below -75°C and deep vacuum below 5Pa to provide stable and repeatable lyophilization for laboratory development, pilot batches and small production runs. Standard and top-press configurations across LGJ-20F, LGJ-30F, LGJ-50F and LGJ-100F models support a wide range of freeze drying areas from 0.2m² to 1.152m².

⚙️ Design & Construction

The AELAB LGJ-20F Series silicon oil heating freeze dryer adopts a robust floor-standing structure with integrated refrigeration, vacuum and control systems. The freeze drying chamber uses shelves heated by circulating silicon oil to achieve precise and uniform temperature control directly at the product contact surface. Shelf temperature uniformity is within ≤1°C, ensuring consistent drying performance across trays.

The drying chamber door is manufactured from colorless transparent organic glass so the operator can clearly view the freeze-drying process. Square trays are easy to operate and clean, and each model provides specific shelf size and layer configuration as defined in the technical specifications. A 7 inch embedded integrated color touch screen with PLC controlling system displays drying curves and operating status clearly. Cold and well-ventilated air cooling maintains condenser performance at Rt≤25°C to support a condenser temperature of less than -75°C.

🔬 Working Principle / Testing Method

The AELAB LGJ Silicon Oil Heating Freeze Dryer executes a complete lyophilization cycle in situ on the shelf. Samples are first pre-frozen directly on the temperature-controlled shelves to solidify the product. Under high vacuum (vacuum degree <5Pa), sublimation of ice from the frozen matrix occurs while the condenser, working below -75°C, captures water vapor with a rated water capture capacity from 3Kg/24h up to 15Kg/24h depending on model.

Silicon oil circulation heats the shelves in a controlled manner, allowing the user to adjust and program shelf temperature profiles suitable for pilot and production processes. Freeze drying parameters can be changed during running, and the PLC records the final drying data and curve. An optional eutectic point test function supports determination of critical product temperature. With a charging valve, users can introduce dry inert gas at the end of the cycle to break vacuum and protect sensitive products.

💡 Key Advantages

• In-situ pre-freezing and drying on the same silicon oil heated shelves simplifies handling and minimizes contamination risk for LGJ-20F Series samples
• Shelf temperature uniformity ≤1°C with programmable multi-step profiles enables reproducible lyophilization for pilot and small-scale production batches
• Comprehensive PLC system with 7 inch touch screen records freeze-drying curves and final data, enhancing process traceability and optimization
• Transparent organic glass chamber door allows continuous visual inspection of product and ice front during freeze drying without disturbing vacuum
• Water capture capacity up to 15Kg/24h and freeze drying areas up to 1.152m² provide scalable options from laboratory development to higher throughput loads
• Optional eutectic point test, vacuum regulation device and remote monitoring functions support advanced process development and flexible operation
• Top-press models of AELAB LGJ-20F, LGJ-30F, LGJ-50F and LGJ-100F offer pressing capability on the product surface, improving contact and drying uniformity for bulk materials

🔗 Connectivity & Integration

The AELAB LGJ Silicon Oil Heating Freeze Dryer Series integrates an embedded PLC platform and color touch interface for direct parameter entry, recipe management and real-time curve display. Freeze drying data and curves can be exported via U-disk for archiving, reporting or subsequent analysis on external PCs and LIMS environments. Optional remote monitoring and remote operation functions allow operators to supervise and adjust LGJ-20F Series units from different locations, supporting GLP-compliant documentation and centralized control in multi-instrument laboratories.

🧠 Model Insight

🧪 Testing Applications

The AELAB LGJ-20F Series silicon oil heating freeze dryers are suitable for laboratory research, pilot plant and small-scale production applications requiring controlled lyophilization. Typical uses include stabilization of vaccines, biologicals, enzymes, serum and plasma, fermentation products, diagnostic reagents, natural extracts, culture media and high-value food or nutraceutical products. The combination of programmable shelf heating, deep vacuum and low condenser temperature allows the system to handle heat-sensitive materials with precise endpoint control.

Compliance & Quality Assurance

The AELAB LGJ Silicon Oil Heating Freeze Dryer Series is designed in accordance with modern laboratory safety and quality requirements. PLC-based process control with data recording supports GLP-style documentation of freeze-drying curves and operating parameters. Stable condenser performance below -75°C, defined vacuum degree and verified shelf temperature uniformity help maintain consistent product quality across batches. Optional remote monitoring, eutectic point testing and vacuum regulation further strengthen process validation and long-term reliability of AELAB LGJ-20F Series freeze dryers.