Medium Stoppering R&D Freeze Dryer

Medium Stoppering R&D Freeze Dryer – QualiRFD™ 8S

A stoppering R&D Freeze Dryer supports precise cycle development while maintaining product integrity after drying and during storage. The QualiRFD™ 8S is built for medium-scale batches where repeatability and production-style handling are critical. Its in-situ workflow allows freezing and drying within the same chamber, reducing manual transfer steps and improving consistency across development runs.

The QualiRFD™ 8S operates as an in-situ vacuum Freeze Dryer with a dual-chamber configuration that integrates a drying chamber and a condenser (cold trap). The condenser efficiently captures sublimated vapor while stable vacuum conditions are maintained in the chamber, supporting controlled primary drying performance. The integrated stoppering system seals vials at the end of the cycle, helping limit moisture ingress and contamination risks during storage and transport.

The system features recipe-driven control with multi-step programming, allowing users to define and repeat temperature ramps, hold phases, and cycle parameters for process optimization. Shelf-level temperature monitoring provides deeper insight during development, making it easier to manage critical product temperature limits and refine lyophilization cycles with accuracy.

Applications

Lyophilized Pharmaceutical Vials (R&D Use):
Cycle development for injectable formulations requires controlled temperature ramps, stable vacuum levels, and consistent endpoints. In-chamber stoppering within the Freeze Dryer helps maintain cake structure and limits moisture reabsorption after drying, supporting stability studies and smooth transfer to packaging stages.

Biotech and Life Science Reagents:
Proteins, enzymes, and sensitive biological materials require low residual moisture and uniform sublimation conditions. Programmable multi-step cycles and precise shelf temperature control allow teams to evaluate formulations and process windows with high repeatability across runs.

In Vitro Diagnostic (IVD) and Research Kits:
Many IVD and research products are filled into vials prior to lyophilization. Stoppering immediately after drying helps extend shelf life by reducing moisture exposure and minimizing contamination risk during post-process handling and storage.

Specialty Materials and Chemical R&D:
Freeze drying is widely used for developing porous structures, powders, and advanced materials where ice formation and drying parameters affect final morphology. Recorded process data supports validation, comparison of trials, and consistent reproduction of results across experiments.

Standards

ISO 13408-3 (Aseptic Processing — Lyophilization):
Provides guidance for control and validation of lyophilization processes in aseptic environments, aligning with vial-based applications and in-chamber stoppering workflows.

ASTM E2500:
Defines a science- and risk-based framework for specification, design, and verification of pharmaceutical and biopharmaceutical manufacturing systems, supporting structured development and qualification of Freeze Dryers.

ISO 14644-1:
Covers cleanroom air cleanliness classification, often referenced when Freeze Dryer installation and operation are connected to controlled or classified environments.

Medium Stoppering R&D Freeze Dryer – QualiRFD™ 8S Key Features

• In-situ vacuum Freeze Dryer workflow that integrates freezing and drying within a single chamber, reducing handling steps and improving process consistency.
• Integrated stoppering system designed to seal vial stoppers at the end of the cycle, helping limit moisture uptake and supporting clean transfer and storage.
• Dual-chamber configuration combining a drying chamber with a cold trap (condenser) for efficient vapor capture and stable sublimation conditions.
• Shelf-level independent sample temperature monitoring, providing accurate insight during cycle development and validation runs.
• Flexible control with stepwise or linear programming for temperature ramps and hold phases across freezing, primary drying, and secondary drying stages.
• Shelf temperature control accuracy of ±1°C, supported by PLC-based control and PID regulation for stable operation.
• Cold trap pull-down capability from -20°C to -40°C within ≤20 minutes, helping reduce preparation time between cycles.
• Nitrogen backfill function available for inert gas use during drying or at the end of the cycle to support product protection.
• Recipe storage with up to 36 segments per program, with options to adjust parameters and skip steps during automated operation.
• Built-in maintenance alerts and safety protections, including alarm systems, emergency stop, and overpressure protection for reliable operation.

Theory and Method

Freeze drying removes solvent through three main stages: freezing, sublimation, and desorption under reduced pressure. The product is first frozen on temperature-controlled shelves, which defines the ice structure and influences vapor flow during the drying phase. During primary drying, vacuum conditions allow ice to convert directly into vapor, which is then captured by the cold trap at low temperature to maintain stable chamber conditions.

Secondary drying focuses on reducing bound moisture by maintaining vacuum while adjusting shelf temperature to reach the desired residual moisture level. In a stoppering Freeze Dryer, a final closure step seals vial stoppers at the end of the cycle, helping minimize moisture reabsorption and protecting product quality during storage and handling.

Medium Stoppering R&D Freeze Dryer – QualiRFD™ 8S Technical Specification

Specification	Unit	QualiRFD™ 8S
Freeze drying area	m²	0.3
Cold trap temperature (no-load)	°C	< -75
Vacuum level (no-load)	Pa	≤ 1
Shelf temperature range (no-load)	°C	-55 to +70
Maximum ice capacity	kg/24h	≥ 8
Number of shelf layers	pcs	3 + 1
Material tray size	mm	300 × 340
Shelf spacing	mm	70
Overall power	kW	5.5
Weight	kg	400
Dimensions	mm	853 × 1272 × 1679
Loadable materials	L/kg	3
Vial capacity (Φ12 mm)	pcs	2187
Vial capacity (Φ16 mm)	pcs	1200
Vial capacity (Φ22 mm)	pcs	654
Defrost mode	—	Electric defrost
Safety devices	—	Audible alarm, emergency stop, overpressure protection
Voltage	—	Three-phase 5-wire, 380 V