YIHENG DZF-6022T Benchtop Intelligent Vacuum Drying Oven

Overview

The YIHENG DZF-6022T is a benchtop intelligent vacuum drying oven engineered for precise thermal processing of oxygen-sensitive, thermolabile, and oxidation-prone materials. Operating on the fundamental principle of reduced-pressure drying—where lowering ambient pressure depresses the boiling point of solvents and moisture—the DZF-6022T enables gentle, uniform dehydration without thermal degradation. Unlike conventional forced-air ovens, this system eliminates convective heat transfer limitations by removing atmospheric oxygen and facilitating direct conductive heating through its integrated band-type heater array. The result is accelerated drying kinetics—up to 40% faster than legacy vacuum ovens—while maintaining structural integrity of biological samples, pharmaceutical intermediates, polymer precursors, and nanomaterial dispersions. Its compact footprint (605 × 490 × 450 mm) and stainless steel chamber (300 × 300 × 275 mm) make it ideal for QC labs, R&D facilities, and academic core instrumentation suites where space efficiency and process repeatability are critical.

Key Features

• 4.3-inch high-resolution TFT touchscreen interface enabling real-time monitoring and intuitive programming of temperature setpoints, dwell time, and vacuum ramp profiles
• Microprocessor-based PID temperature controller with 0.1°C resolution and ±1°C uniformity across the working chamber
• Dual-layer tempered glass observation door with adjustable sealing tension and integrally molded silicone gasket ensuring sustained vacuum integrity ≤133 Pa
• Stainless steel (SUS304) interior chamber resistant to corrosion, easy to decontaminate, and compliant with ISO 14644-1 Class 7 cleanroom maintenance protocols
• Band-type heating elements mounted directly beneath the chamber floor for optimized thermal conduction and minimized temperature gradients
• Standard inert gas inlet port (N₂ or Ar compatible) supporting controlled atmosphere operation—critical for moisture-sensitive hygroscopic compounds and air-reactive organometallics
• Modular design accommodating optional accessories including calibrated digital vacuum gauges, oil mist filtration systems, and electronic safety interlocks

Sample Compatibility & Compliance

The DZF-6022T accommodates a broad spectrum of sample types: lyophilized protein formulations, ceramic green bodies, lithium-ion battery electrode coatings, herbal extracts, and semiconductor wafer substrates. Its ability to operate under inert gas purge conditions satisfies ASTM E145–22 requirements for moisture content determination in hygroscopic solids and aligns with USP guidelines for residual solvent analysis. While not certified to IEC 61010-1 as a standalone medical device, its construction meets general-purpose laboratory equipment safety standards for Class II, Division 1 environments. Vacuum performance is validated per ISO 2787:2015 (vacuum system leakage rate ≤5 × 10⁻³ Pa·m³/s), and all electrical components conform to CE marking directives for EMC and low-voltage safety.

Software & Data Management

The embedded control firmware supports manual and programmable drying cycles with up to 10 user-defined profiles. Though the base unit does not include PC connectivity, optional RS485/Modbus RTU interface modules enable integration into centralized LabVantage or STARLIMS data acquisition platforms. All temperature and vacuum logs are timestamped and stored internally for ≥30 days; export via USB flash drive (FAT32 formatted) generates CSV files compatible with JMP, MATLAB, or Excel for statistical process control (SPC) charting. Audit trail functionality—including operator ID, parameter changes, and alarm events—is available when paired with the electronic safety door lock module, satisfying FDA 21 CFR Part 11 requirements for electronic records in GMP-regulated environments.

Applications

• Pharmaceutical: Residual solvent removal from active pharmaceutical ingredients (APIs) prior to tablet compression
• Materials Science: Debinding of metal injection molding (MIM) feedstocks and thermal debubbling of optical resin castings
• Electronics: Moisture evacuation from PCB assemblies pre-conformal coating and desiccation of MEMS packaging cavities
• Academic Research: Solvent exchange in aerogel synthesis and low-temperature drying of cryo-sectioned tissue specimens
• Quality Control: Moisture content validation per ISO 554 and ASTM D2216 for polymers, adhesives, and composite laminates

FAQ

Does the DZF-6022T include a vacuum pump?
No. The unit is supplied without a vacuum pump; users must select and integrate a compatible two-stage rotary vane or diaphragm pump based on required ultimate vacuum and chemical compatibility.
Can the temperature be programmed to ramp and hold?
Yes. The touchscreen controller supports multi-step programs with up to three segments (ramp rate, target temperature, dwell duration) per cycle.
Is the chamber volume validated for temperature uniformity per ISO 17025?
Uniformity testing is performed at point-of-manufacture using NIST-traceable PT100 probes; full validation kits (including probe mapping templates and IQ/OQ documentation) are available upon request.
What maintenance is required for long-term vacuum integrity?
Silicone door gaskets should be inspected quarterly; replacement intervals average 18–24 months under normal use. Oil in connected vacuum pumps must be changed every 500 operating hours.
Can the DZF-6022T be used for sterilization?
No. This instrument is not designed or validated for microbial kill efficacy; it lacks the temperature-time parameters required for steam or dry-heat sterilization per ISO 17665 or EN 554.