Precision Electric Heating Freeze Dryer

Precision Electric Heating Freeze Dryer – QualiFD™ PEH Series

The QualiFD™ PEH Series Precision Electric Heating Freeze Dryer delivers integrated freezing, sublimation, and drying within a single controlled chamber. Its programmable shelf heating allows consistent, repeatable freeze-drying cycles while reducing handling and contamination risk. The system offers flexible manual operation for process development and automatic mode for routine batch processing.

Designed for pre-freezing and in-situ drying, the PEH Series provides precise shelf temperature control with adjustable heating rates. A transparent acrylic chamber door allows full visual monitoring throughout the freeze-drying process.

Safety features include a diaphragm inflation valve for inert-gas backfill after drying, protecting delicate materials. PID shelf temperature regulation ensures minimal shelf-to-shelf variation, enhancing drying uniformity. The integrated controller stores multiple recipes with multi-segment temperature programming and logs cold-trap, sample temperatures, and vacuum curves for documentation and analysis.

Applications

Laboratory Materials:
The QualiFD™ PEH Series is ideal for conventional lab materials, including liquids, pastes, and solids. Shelf-based drying allows efficient batch processing across multiple trays, while logged temperature and vacuum curves enable comparison of repeated cycles for consistent results.

Pharmaceutical and Formulation Development:
Controlled shelf temperature ramps and precise vacuum management make the PEH Series suitable for formulation screening and cycle development. Stored recipes and multi-segment programming allow teams to apply validated parameters across batches. Manual mode supports experimental cycle development, while automatic mode ensures consistent reproduction once parameters are finalized.

Biotechnology and Biological Samples:
Freeze drying with the PEH Series enhances stability of temperature-sensitive biological samples for storage and further testing. Inert-gas backfill provides controlled venting for oxygen-sensitive products, and calibrated sensors maintain accurate measurements for long-term lab operations.

Food and Ingredient R&D:
R&D teams can use precise lyophilization to assess ingredients and prototypes where traditional heat drying may affect structure or aroma. The 0.4 m² shelf area accommodates larger sample sets compared to standard benchtop units. Programmable segments ensure consistent testing conditions when evaluating multiple formulations side by side.

Standards Compliance – QualiFD™ PEH Series

• ISO 13408-3: Provides requirements and guidance for lyophilization in aseptic processes, ensuring reliable sterile processing.
• ASTM E3250: Outlines best practices for freeze dryer instrumentation, with emphasis on accurate product temperature and pressure measurement.
• IEC 61010-1: Defines general safety requirements for electrical laboratory equipment, ensuring safe operation in research and production environments.

Key Features – Precision Electric Heating Freeze Dryer – QualiFD™ PEH Series

• Integrated Pre-Freezing and Drying: Supports an in-situ workflow that minimizes handling and reduces contamination risk.
• Transparent Chamber Door: Full-process visibility for monitoring samples throughout freeze drying.
• Safety Diaphragm Valve: Enables inert-gas connection and controlled backfill after drying to protect sensitive materials.
• Optimized Gas Diversion: Ensures more uniform ice capture in the cold trap.
• PID Shelf Temperature Control: Maintains tight temperature uniformity and high precision for consistent drying.
• Multi-Recipe Controller: Allows multi-segment temperature programming for cycle development and repeatable production runs.
• Real-Time Data Logging: Records cold-trap, sample temperatures, and vacuum curves, with options to export for review and printing.
• Advanced Alarm System: Displays alerts and provides historical alarm queries to aid troubleshooting and maintenance.
• User-Level Permissions: Secure operation management with password-protected access.

Theory and Method – Precision Electric Heating Freeze Dryer

Freeze drying begins by freezing the product, followed by lowering chamber pressure to allow ice to sublimate directly into vapor. Controlled shelf heating provides the energy required during primary drying, while the cold trap captures vapor to maintain stable vacuum conditions.

Secondary drying continues under precise temperature and vacuum control to reduce residual moisture to the desired level. Process optimization focuses on pre-freezing cooling rate, sample warming rate, and vacuum adjustment throughout drying stages. Recorded temperature and vacuum curves enable documentation, cycle analysis, and refinement for consistent, repeatable results.

Precision Electric Heating Freeze Dryer – QualiFD™ PEH Series Technical Specification

Specification	QualiFD™ PEH Series
Freeze drying area	0.4 m²
Cold trap temperature	≤ -60 °C; optional ≤ -80 °C (no-load)
Vacuum level	≤ 5 Pa (no-load)
Shelf temperature range	-50 to +70 °C (no-load); optional -70 to +70 °C
Water capture capacity	≥ 8 kg/24 h
Material tray size	335 × 295 mm
Number of material trays	4 pcs
Shelf size	340 × 300 mm
Shelf spacing	50 mm
Overall power	2700 W
Weight	280 kg
Dimensions (W×D×H)	773 × 750 × 1472 mm
Loadable materials	4 L (10 mm thickness reference)
Capping method	Manual crimping
Defrost mode	Natural defrosting (optional electric defrost)
Voltage	Three-phase 5-wire, 380 V