Ningbo Scientz SCIENTZ-12ND/B Benchtop Shelf-Type Freeze Dryer with Heated Chambers

Overview

The Ningbo Scientz SCIENTZ-12ND/B is a benchtop shelf-type freeze dryer engineered for precision lyophilization in research and development laboratories. It operates on the principle of sublimation under high vacuum—where frozen water transitions directly from solid to vapor without passing through the liquid phase—preserving structural integrity, biological activity, and chemical stability of thermolabile samples. Designed with an integrated heated shelf system, it supports controlled primary and secondary drying stages via programmable temperature ramps. The unit employs a dual-stage refrigeration architecture capable of achieving cold trap temperatures down to −56 °C (standard configuration), with optional −80 °C dual-compressor systems available for low-eutectic-point formulations. Its compact footprint (590 × 460 × 400 mm base + 440 mm chamber height) enables deployment in space-constrained environments—including biosafety cabinets, clean benches, and modular lab setups—without compromising performance or reproducibility.

Key Features

• Heated stainless-steel shelves with PID-controlled temperature regulation (range: −50 °C to +60 °C), enabling precise process optimization for formulation development and scale-up studies.
• 7-inch true-color capacitive touchscreen interface with industrial-grade embedded OS; real-time display of cold trap temperature, chamber pressure, shelf temperature, and vacuum status.
• Imported high-efficiency scroll compressor (rated for continuous operation) with intelligent vacuum pump interlock: vacuum pump activation is inhibited until cold trap reaches preset temperature, extending pump service life and minimizing oil backstreaming risk.
• Optically transparent polycarbonate drying chamber (one-piece molded, solvent-resistant, non-porous), allowing full visual monitoring of sublimation front progression and cake morphology throughout the cycle.
• Integrated inert gas purge valve (N₂ or Ar compatible) for oxygen-sensitive samples; optional automatic differential-pressure valve prevents oil ingress during venting.
• Onboard data logging with ≥10,000-cycle storage capacity; exportable via USB flash drive in CSV format; compatible with third-party LIMS and ELN platforms via serial or Ethernet interfaces.

Sample Compatibility & Compliance

The SCIENTZ-12ND/B accommodates vials (10–22 mm diameter), bulk trays (up to 0.12 m² active surface), and standard岐管 flasks (8-port configuration included). It supports lyophilization of aqueous and organic-solvent-based formulations—including protein therapeutics, viral vectors, mRNA-LNPs, botanical extracts, microbial cultures, tissue homogenates, and environmental matrices (e.g., soil slurries, wastewater solids). All critical parameters comply with ASTM F2375-22 (Standard Guide for Lyophilization Process Development) and align with ICH Q5C (Stability Testing of Biotechnological/Biological Products). Data audit trails meet FDA 21 CFR Part 11 requirements when paired with validated software configurations. System validation documentation (IQ/OQ/PQ protocols) is available upon request for GLP/GMP-regulated environments.

Software & Data Management

The embedded control system records time-stamped values for shelf temperature, chamber pressure, condenser temperature, and elapsed cycle time at user-defined intervals (1–60 s). Freeze-drying curves are stored with metadata (operator ID, batch number, protocol name) and support replay visualization with overlay comparison across multiple runs. USB export enables offline analysis in MATLAB, Python (Pandas), or commercial statistical packages. Optional PC-based supervisory software provides remote monitoring, alarm notification via email/SMS, and automated report generation compliant with ISO/IEC 17025 documentation standards.

Applications

This instrument serves as a platform for R&D-scale lyophilization across academic, governmental, and industrial laboratories. Typical use cases include: stabilization of monoclonal antibodies and recombinant enzymes prior to structural characterization; preparation of reference standards for food safety testing (e.g., pesticide residue analysis in produce); preservation of clinical isolates (bacteria, fungi, viruses) for biobanking; processing of nanocellulose suspensions and metal-organic frameworks (MOFs) to prevent agglomeration; dehydration of herbal extracts for HPLC-MS quantification; and pilot-scale process mapping for parenteral dosage forms (e.g., lyophilized vaccines, interferon formulations, ocular delivery systems). Its shelf heating capability facilitates systematic investigation of collapse temperature (T_c) and eutectic melting point (T_eu) using optional in-chamber resistance thermometry.

FAQ

What is the maximum sample volume per batch?

The unit supports up to 3 kg of ice-equivalent load over 24 hours, corresponding to approximately 4 L of 10% w/v aqueous solution per full cycle.

Is the system compatible with GMP documentation requirements?

Yes—when configured with audit-trail-enabled firmware and electronic signature modules, it satisfies ALCOA+ data integrity principles and supports 21 CFR Part 11 compliance verification.

Can the cold trap temperature be monitored independently during operation?

Yes—the condenser temperature sensor provides continuous feedback independent of shelf or chamber readings, ensuring accurate tracking of ice accumulation dynamics.

What vacuum pump options are supported?

The system is compatible with oil-lubricated rotary vane pumps (≥4 m³/h capacity), dry scroll pumps, and hybrid turbomolecular systems; optional oil mist filter and anti-backstreaming valve kits are available.

Does the unit support automated defrosting?

Yes—an electric defrost function accelerates ice removal from the condenser, reducing downtime between consecutive batches by up to 40% compared to passive thawing.