JingHong DZF-6090TH & DZF-6090TG Vacuum Drying Ovens
| Brand | JingHong |
|---|---|
| Origin | Shanghai, China |
| Model | DZF-6090TH (DZF-6090), DZF-6090TG |
| Temperature Range | RT+10°C to 250°C |
| Temperature Uniformity | ±1°C |
| Temperature Resolution | 0.1°C |
| Vacuum Level | ≤133 Pa |
| Internal Chamber Dimensions | 450×450×450 mm |
| External Dimensions | 635×645×1295 mm |
| Chamber Material | Stainless Steel (1Cr18Ni9Ti) |
| Heating Method | Forced Air Circulation |
| Operating Ambient Temperature | 5–40°C |
| Compliance | Designed for GLP-compliant laboratory environments |
Overview
The JingHong DZF-6090TH and DZF-6090TG are precision-engineered vacuum drying ovens designed for controlled thermal processing under reduced-pressure conditions. These instruments operate on the principle of lowering the boiling point of solvents and moisture through vacuum application—enabling gentle, low-temperature drying of heat-sensitive, hygroscopic, or oxygen-sensitive materials without thermal degradation. Engineered for reliability in regulated laboratory settings, the DZF-6090 series maintains stable vacuum integrity and high thermal uniformity across its 91.1 L stainless steel chamber (450 × 450 × 450 mm), making it suitable for applications ranging from pharmaceutical active ingredient stabilization to electronic component desiccation and polymer sample conditioning.
Key Features
- Robust stainless steel (1Cr18Ni9Ti) inner chamber with seamless welding and electropolished finish—resistant to corrosion, easy to clean, and compliant with ISO 14644-1 Class 7 cleanroom-compatible handling protocols.
- Double-layer tempered glass observation door with integrated silicone gasket seal—enables real-time visual monitoring while sustaining vacuum levels ≤133 Pa; door tension is fully adjustable to ensure long-term sealing integrity.
- Microprocessor-based PID temperature controller with dual digital display (setpoint & actual)—supports auto-tuning, overshoot suppression, and programmable ramp/soak profiles for reproducible thermal cycles.
- Proportional heating power modulation—eliminates thermal overshoot at low setpoints (e.g., <50°C), critical for drying biological tissues, catalysts, or nanomaterials without structural collapse.
- Forced-air convection system with rear-mounted centrifugal blower—ensures uniform temperature distribution (±1°C) throughout the working volume per ASTM E2207-22 requirements for laboratory ovens.
- Mechanical vacuum gauge standard-installed—provides immediate, drift-free pressure feedback; compatible with optional external vacuum pumps (e.g., 2XZ-4 rotary vane pump) for accelerated evacuation and deeper vacuum hold.
Sample Compatibility & Compliance
These ovens accommodate a broad spectrum of sample types—including powders, granules, thin films, ceramic precursors, lyophilized intermediates, and coated substrates—without risk of oxidation or decomposition. The inert, low-oxygen environment mitigates Maillard reactions in food science studies and prevents hydrolysis in moisture-sensitive APIs. All units are assembled and tested per GB/T 5170.11–2017 (equivalent to IEC 60068-2-2 for dry heat testing) and support audit-ready documentation for GLP and GMP workflows. While not FDA 21 CFR Part 11–certified out-of-the-box, the control system architecture allows integration with validated data acquisition software for electronic record retention.
Software & Data Management
The embedded controller logs temperature and vacuum status at user-defined intervals (1–60 min), storing up to 100 cycle records internally. Optional RS485/Modbus RTU interface enables connection to SCADA or LIMS platforms for centralized monitoring and automated report generation. Raw data export (CSV) supports traceability per ISO/IEC 17025:2017 Clause 7.5.2, and time-stamped event logs (door open/close, alarm triggers, setpoint changes) satisfy internal QA requirements for process validation.
Applications
- Pharmaceutical R&D: Residual solvent removal from APIs prior to crystallization or tablet compression.
- Materials Science: Outgassing of metal-organic frameworks (MOFs) and battery electrode coatings before electrochemical characterization.
- Academic Research: Drying of plant extracts, enzyme preparations, and microbial cultures under non-denaturing conditions.
- Quality Control Labs: Moisture content determination per USP <731> and ASTM D2298–16 for polymer resins and adhesives.
- Electronics Manufacturing: Pre-bake of PCB assemblies and MEMS devices to eliminate interstitial humidity prior to encapsulation.
FAQ
What vacuum level can the DZF-6090TH/TG achieve without an external pump?
The built-in mechanical vacuum gauge monitors pressure, but the unit requires an external vacuum pump (e.g., 2XZ-4) to reach and maintain ≤133 Pa.
Is the chamber volume verified per ISO 12777?
Yes—the nominal 91.1 L capacity is calculated from internal dimensions (450 × 450 × 450 mm) and conforms to ISO 12777 Annex A for volumetric calibration of drying equipment.
Can the oven be used for nitrogen-purged drying?
While not equipped with gas inlet ports, the chamber design permits manual purging via needle valve adaptation; however, this voids vacuum integrity certification unless performed under validated SOPs.
Does the controller support remote calibration verification?
No—the PID controller lacks Ethernet or USB calibration port; field verification requires external PT100 probe and reference thermometer per ISO/IEC 17025 procedures.
Are replacement gaskets and trays available as spare parts?
Yes—silicone door seals (part #DZF-GSK-6090), stainless steel trays (part #DZF-TRAY-450), and vacuum hose fittings are stocked and shipped globally.
