Ningbo Scientz SCIENTZ-18ND/B Stoppering Benchtop Freeze Dryer

Overview

The Ningbo Scientz SCIENTZ-18ND/B is a laboratory-grade stoppering benchtop freeze dryer engineered for reproducible, controlled lyophilization of heat-sensitive biological, pharmaceutical, and material science samples. It operates on the fundamental principle of sublimation under deep vacuum: frozen water in the sample transitions directly from solid to vapor phase without passing through liquid—preserving structural integrity, bioactivity, and chemical conformation. Unlike conventional tray-style units, the SCIENTZ-18ND/B integrates a top-mounted hydraulic or manual lid-sealing mechanism that enables in-situ vial stoppering under vacuum or inert gas (e.g., nitrogen or argon), eliminating post-drying exposure to ambient moisture and oxygen. This capability is critical for GMP-aligned process development, sterile formulation studies, and long-term stability testing of biologics such as monoclonal antibodies, vaccines, enzymes, and nucleic acids. The system features a robust stainless-steel condenser chamber, double-stage refrigeration architecture (standard −56 °C; optional −80 °C cascade), and a fully sealed polycarbonate drying chamber with optical clarity for real-time visual monitoring of ice sublimation and cake formation.

Key Features

• Stoppering-ready design with vacuum-tight lid actuation—enables final container closure without breaking vacuum or introducing contaminants
• 7-inch true-color capacitive touchscreen interface with industrial-grade embedded OS, supporting multi-user access control and audit-trail–capable operation logs
• PID-controlled shelf heating via low-voltage (36 V) silicone rubber heating plates—ensures uniform temperature distribution (±0.5 °C) and eliminates thermal overshoot during primary drying
• Imported high-efficiency compressor with intelligent cold trap activation logic: vacuum pump engages only after condenser reaches preset temperature (e.g., ≤−45 °C), extending pump service life and reducing oil contamination risk
• Optically transparent, one-piece injection-molded polycarbonate drying chamber—chemically resistant, shatterproof, and fully sealable with integrated inert gas purge valve (ISO-KF 25 port)
• Automated data logging: all critical parameters—including shelf temperature, condenser temperature, chamber pressure, and time—are timestamped and stored internally (≥10,000 data points); exportable via USB to CSV or compatible LIMS platforms
• Optional accessories include vacuum oil mist filter, automatic differential pressure valve (to prevent backstreaming), eutectic point detection probe, and programmable vacuum ramp control for optimized mass transfer efficiency

Sample Compatibility & Compliance

The SCIENTZ-18ND/B accommodates standard 10–22 mm diameter serum vials (up to 8 positions on the shelf), custom glassware with ISO-KF flanges, and open petri dishes for bulk lyophilization. Its validated performance meets core requirements for method development under ICH Q5C (stability testing), USP (sterile processing), and ISO 22000 (food safety). While not certified for full 21 CFR Part 11 compliance out-of-the-box, its firmware supports electronic signatures, user-level permissions, and immutable audit trails when configured with external validation protocols. The system is routinely deployed in GLP-compliant academic labs (e.g., CAS institutes, agricultural research centers), regulatory testing facilities (CIQ, CDC), and early-phase biopharma R&D environments where traceability, repeatability, and process understanding are foundational.

Software & Data Management

The built-in operating system provides real-time graphing of all process variables with zoomable trend views and overlay comparison of up to three historical cycles. Freeze-drying protocols are saved as editable .fdp files with stepwise control over shelf ramp rates, hold durations, pressure setpoints, and condenser cooldown sequences. Data exports support FDA-aligned formats: CSV for statistical analysis (e.g., JMP, Minitab), PDF reports with digital signature fields, and direct integration with LabArchives or Benchling via REST API (with optional middleware license). All data storage adheres to ALCOA+ principles—attributable, legible, contemporaneous, original, accurate, complete, consistent, enduring, and available—facilitating internal QA review and external inspection readiness.

Applications

• Biopharmaceutical R&D: Lyophilization cycle development for protein therapeutics, viral vectors, and mRNA-LNPs; stoppered vial stability assessment per ICH Q5C
• Agricultural & Food Science: Preservation of microbial cultures (e.g., lactic acid bacteria), plant tissue explants, and pesticide residue standards for GC-MS/LC-MS analysis
• Environmental Analysis: Stabilization of soil, sludge, and sediment samples prior to heavy metal speciation or metagenomic sequencing
• Materials Research: Drying of nanocellulose hydrogels, MOFs, and catalyst precursors without particle aggregation or pore collapse
• Clinical Diagnostics: Long-term storage of reference sera, calibration standards, and pathogen isolates (e.g., SARS-CoV-2 pseudoviruses) under WHO-recommended conditions

FAQ

Does the SCIENTZ-18ND/B support automated stoppering under inert gas?
Yes—the system includes a dedicated inert gas inlet valve (N₂ or Ar) and programmable gas-purge timing synchronized with lid descent and vacuum maintenance.

Can it be validated for GMP manufacturing use?
It is designed for R&D and pilot-scale process development; full GMP qualification requires IQ/OQ/PQ documentation, which Scientz provides upon request with third-party verification support.

What vacuum pump compatibility does it offer?
The unit interfaces with multiple international vacuum pump brands (e.g., Edwards, Leybold, Agilent) via standard KF25 flange and analog 0–10 V feedback signal.

Is remote monitoring possible?
Local Ethernet connectivity enables browser-based status viewing and alarm notifications via SNMP or Modbus TCP (optional firmware module).

How is condenser defrosting managed?
An electric resistive defrost function accelerates melt-cycle time by up to 40%, with automatic condensate drainage and temperature interlock to prevent premature restart.