Ningbo Scientz SCIENTZ-25TK T-Frame Benchtop Freeze Dryer

Overview

The Ningbo Scientz SCIENTZ-25TK is a T-frame benchtop freeze dryer engineered for pilot-scale lyophilization of heat-sensitive biological materials under controlled low-temperature and high-vacuum conditions. It operates on the fundamental principles of sublimation—removing water from frozen samples via direct phase transition from ice to vapor—while maintaining structural integrity and biological activity. Designed for laboratories requiring reproducible, contamination-controlled drying of microbial cultures, peptides, fungi, and bacterial strains, the SCIENTZ-25TK integrates a self-contained refrigeration system, intelligent vacuum management, and modular sample handling architecture. Its T-frame configuration supports upright vial orientation with independent valve control per port, enabling parallel processing without cross-contamination—a critical requirement in strain banking, pharmaceutical stability studies, and biobanking workflows.

Key Features

• T-frame architecture with 24 independently controllable silicone-sealed valves for simultaneous lyophilization of 24 wide-mouth or scintillation vials
• Dedicated material pathway design isolates each sample channel, eliminating vapor-phase cross-talk and ensuring batch purity
• Single-stage auto-cascade refrigeration system delivering ≤−70 °C cold trap temperature (no load); optional −80 °C compressor upgrade available for enhanced ice capacity and lower residual moisture
• PLC-based control system with 7-inch color touchscreen interface supporting real-time parameter monitoring, programmable drying profiles, and event-triggered alarms
• Intelligent vacuum interlock: vacuum pump activation is inhibited until cold trap reaches user-defined setpoint, preventing oil backstreaming and condenser overload
• Integrated defrost cycle with automated timing and temperature feedback—reducing downtime and energy consumption by up to 30% versus manual cycles
• Optional accessories include inert gas purge valve (N₂ or Ar), oil mist filter, anti-backflow vacuum check valve, and custom-configurable vial racks

Sample Compatibility & Compliance

The SCIENTZ-25TK accommodates standard 10–50 mL glass vials, serum bottles, and flasks with O-ring–compatible neck diameters. Its sealed acrylic drying chamber provides corrosion-resistant visibility during operation while maintaining ISO Class 5 cleanroom-compatible integrity when used with HEPA-filtered inert gas purging. The system supports Good Laboratory Practice (GLP) and Good Manufacturing Practice (GMP)-aligned workflows through audit-trail-capable data logging—including timestamped records of shelf temperature, chamber pressure, cold trap temperature, and valve status. While not pre-certified to FDA 21 CFR Part 11, its data export functionality (USB storage, CSV format) enables integration into validated electronic lab notebook (ELN) or LIMS environments compliant with ISO/IEC 17025 and ASTM E2500-22 requirements for equipment qualification.

Software & Data Management

The embedded control firmware logs all critical process variables at user-selectable intervals (1–60 seconds), storing ≥10,000 data points internally. Historical runs are retrievable via touchscreen navigation or exported to USB flash drives in comma-separated values (CSV) format for offline analysis in MATLAB, Python, or statistical process control (SPC) platforms. Alarms—including high ambient temperature, vacuum failure, or compressor overheat—are logged with severity level and timestamp. Firmware supports password-protected user roles (Operator, Technician, Administrator) and includes automatic power-loss recovery: upon restart, the system resumes the last active drying stage using saved setpoints and elapsed time counters.

Applications

• Long-term preservation of bacterial and fungal cultures without loss of viability or genetic drift
• Stabilization of labile peptides and recombinant proteins prior to analytical characterization or formulation development
• Preparation of reference standards for QC laboratories operating under USP & EP monograph guidelines
• Processing of clinical microbiology specimens for biobank archiving under standardized cryopreservation protocols
• Scale-down modeling of industrial freeze-drying cycles for formulation optimization and regulatory filing support

FAQ

What is the maximum batch volume supported per run?
The 0.21 m² shelf area supports up to 24 vials (typically 10–30 mL each), assuming standard fill depth of 10 mm and 10% solids concentration.
Does the system meet ISO 22042 for freeze dryer qualification?
While the SCIENTZ-25TK does not ship with full IQ/OQ documentation, its thermal uniformity, vacuum repeatability, and sensor traceability align with key parameters defined in ISO 22042 Annex B for laboratory-scale systems.
Can I integrate this unit with my existing LIMS or ELN platform?
Yes—via manual CSV import or third-party middleware; native API or OPC UA connectivity is not supported out-of-the-box but can be implemented via RS-485 Modbus RTU interface (available on request).
Is the cold trap temperature verified with NIST-traceable calibration?
Factory calibration uses certified thermistors; users may perform field verification using a calibrated PT100 probe inserted through the designated sensor port on the cold trap housing.
What maintenance intervals are recommended for the vacuum pump and refrigeration system?
Oil change every 500 operational hours; refrigerant charge inspection annually; silicone valve seals replaced after 500 freeze-thaw cycles or visible compression set.