Yiheng DZF-6030B Biological Vacuum Drying Oven

Overview

The Yiheng DZF-6030B Biological Vacuum Drying Oven is an engineered solution for low-temperature, oxygen-sensitive drying and stabilization of biologics, pharmaceutical intermediates, enzyme preparations, nucleic acid samples, and other thermolabile materials. Unlike conventional convection ovens, this vacuum drying system operates under reduced pressure—down to 133 Pa—to lower the boiling point of solvents and water, enabling moisture removal at temperatures as low as RT+10 °C. This principle minimizes thermal degradation, prevents oxidation, and preserves structural integrity and biological activity. Designed specifically for life science laboratories, the DZF-6030B integrates precise microprocessor-based temperature control with a robust stainless-steel chamber and gas-tight sealing architecture—ensuring reproducible, contamination-controlled drying under inert atmospheres (e.g., nitrogen or argon).

Key Features

• Biological Application Optimization: Calibrated temperature range (RT+10–65 °C) and high-resolution control (0.1 °C) meet critical requirements for protein lyophilization pre-drying, cell pellet dehydration, and vaccine component stabilization.
• High-Integrity Vacuum Chamber: Seamless 304 stainless steel interior (320 × 320 × 300 mm) resists corrosion from organic solvents and biological residues; electropolished surface enhances cleanability and reduces microbial adhesion.
• Gas Purge Compatibility: Dual-port inert gas inlet allows controlled backfilling with nitrogen or argon after vacuum cycles—essential for maintaining anaerobic conditions during sample handling and storage.
• Optical Monitoring & Safety Sealing: Tempered double-layer glass door provides real-time visual access without vacuum loss; integrated silicone gasket with adjustable door tension ensures long-term vacuum retention (≤133 Pa) and leak rates compliant with ISO 2787:2017 for vacuum equipment.
• Forced-Air Thermal Uniformity: Horizontal airflow distribution system delivers ±1 °C temperature uniformity across the working chamber—validated per ASTM E2297-21 Annex A1 for laboratory ovens used in regulated environments.

Sample Compatibility & Compliance

The DZF-6030B accommodates standard bio-laboratory vessels including Petri dishes, centrifuge tubes (up to 50 mL), multi-well plates, and custom trays—without requiring modification to chamber geometry. Its operating envelope complies with key regulatory expectations for non-sterile processing steps in GLP and GMP-aligned workflows. While not a Class I medical device, its construction adheres to IEC 61010-1:2010 safety standards for electrical equipment in laboratory use. The stainless-steel chamber meets USP requirements for extractables testing when validated with appropriate cleaning protocols. Vacuum performance is traceable to NIST-traceable pressure calibrators, supporting audit readiness for FDA 21 CFR Part 11-compliant data management systems when paired with external logging hardware.

Software & Data Management

The DZF-6030B features a standalone microcontroller interface with digital LED display, real-time temperature readout, and programmable timer (up to 999 minutes). It does not include embedded Ethernet or USB connectivity; however, analog output (0–5 V or 4–20 mA) is available via optional interface module for integration into centralized SCADA or LIMS platforms. For full electronic recordkeeping, users may connect third-party data loggers (e.g., Omega OM-DAQPRO-5300) that support CSV export, alarm-triggered notifications, and 21 CFR Part 11 audit trails—including user authentication, electronic signatures, and immutable timestamped logs. Calibration certificates (temperature and vacuum) are supplied with each unit and conform to ISO/IEC 17025:2017 procedures through accredited third-party labs upon request.

Applications

• Drying of heat-sensitive biomolecules (e.g., monoclonal antibodies, plasmid DNA, CRISPR-Cas complexes)
• Pre-lyophilization conditioning of vials and stoppered containers
• Moisture removal from tissue sections prior to histopathological embedding
• Stabilization of freeze-dried bacterial cultures and fungal spores
• Residual solvent evaporation from HPLC fractions and extraction concentrates
• Accelerated aging studies of pharmaceutical formulations under controlled low-oxygen conditions

FAQ

What is the maximum allowable load volume for optimal vacuum performance?
The chamber’s effective drying volume is ~30.7 L (320 × 320 × 300 mm). For consistent vacuum attainment and thermal uniformity, loading should not exceed 60% of internal volume—approximately 18.4 L of porous or loosely packed samples.
Can the DZF-6030B be used for sterilization?
No. This unit is not designed or validated for microbial kill efficacy. It supports drying and stabilization only—not terminal sterilization (e.g., steam, dry heat, or ethylene oxide). Sterilization requires dedicated autoclaves or depyrogenation tunnels meeting ISO 17665 or EN 285 standards.
Is validation documentation available for IQ/OQ/PQ protocols?
Yes. Yiheng provides generic IQ/OQ templates aligned with ASTM E2500-13 and EU Annex 15. Site-specific PQ execution—including temperature mapping (per ISO 14644-3), vacuum decay testing, and recovery time assessment—must be performed by qualified personnel using calibrated instrumentation.
Does the oven support ramp-hold temperature profiles?
No. The DZF-6030B offers single-setpoint control with fixed timer operation. Multi-stage profiles require external programmable controllers or integration with PLC-based automation systems.
What maintenance is required to sustain vacuum integrity?
Silicone door gaskets should be inspected quarterly for compression set or cracking; vacuum pump oil must be changed every 200 operational hours if using an external two-stage rotary vane pump. Chamber interior cleaning is recommended after each batch using 70% ethanol or approved enzymatic cleaners—avoiding chloride-containing solutions to prevent pitting of 304 stainless steel.