Hanuo DZF-6020 Vacuum Drying Oven
| Brand | Hanuo |
|---|---|
| Origin | Shanghai, China |
| Model | DZF-6020 |
| Instrument Type | Vacuum Oven |
| Temperature Range | 50–250 °C |
| Temperature Uniformity | ±1 °C |
| Chamber Dimensions (W×D×H) | 300×300×275 mm |
| Interior Material | Stainless Steel (SUS304) |
| Heating Method | Forced Convection (Hot Air) |
| Control System | Microprocessor-Based Digital Controller with Timer (1–9999 min) |
| Observation Window | Dual-Layer Tempered Glass |
| Inert Gas Inlet | Yes |
| Vacuum Pump Included | No |
| Compliance | Designed for GLP-compliant laboratory environments |
Overview
The Hanuo DZF-6020 Vacuum Drying Oven is an engineered solution for controlled thermal processing under reduced pressure. It operates on the principle of vacuum-assisted moisture removal—lowering the boiling point of solvents and volatile compounds to enable gentle, low-temperature drying of thermally sensitive, oxidation-prone, or compositionally complex samples. Unlike conventional convection ovens, the DZF-6020 eliminates atmospheric oxygen during operation, significantly reducing degradation pathways in pharmaceutical intermediates, polymer precursors, biological extracts, and nanomaterials. Its forced-air heating system ensures uniform thermal distribution across the stainless-steel chamber while maintaining stable setpoint accuracy within ±1 °C—critical for reproducible drying kinetics and validated process transfer.
Key Features
- Microprocessor-controlled digital interface with programmable timer (1–9999 minutes), supporting unattended batch processing and repeatable thermal protocols.
- Dual-layer tempered glass observation window enables real-time visual monitoring without compromising vacuum integrity or thermal stability.
- Electropolished SUS304 stainless-steel interior chamber resists corrosion from acidic vapors, organic solvents, and residual moisture—ensuring long-term dimensional stability and ease of cleaning.
- Integrated inert gas inlet port (standard NPT 1/4″ thread) allows controlled purging with nitrogen or argon prior to or during vacuum cycles, mitigating oxidative side reactions.
- Robust vacuum-tight door seal with silicone gasket and mechanical clamping lever ensures reliable sealing down to ≤10 Pa (typical operating range: 10–100 Pa), compatible with external two-stage rotary vane or diaphragm vacuum pumps.
- No internal vacuum pump—designed for integration with user-selected, maintenance-optimized pumping systems compliant with ISO 8573-1 Class 4 air purity standards.
Sample Compatibility & Compliance
The DZF-6020 accommodates a broad spectrum of sample formats including Petri dishes, weighing boats, glass vials (up to Ø90 mm × 120 mm height), aluminum trays, and custom fixtures. It supports drying of lyophilized formulations, chromatography stationary phases, electrode coatings, ceramic green bodies, and moisture-sensitive reference standards. The unit meets structural and operational requirements aligned with ISO 14644-1 (cleanroom-compatible surface finish), ASTM E2050 (standard practice for vacuum drying of hygroscopic materials), and general laboratory safety guidelines per IEC 61010-1. While not certified to UL/CSA or CE for standalone sale in North America/EU, its design facilitates third-party validation for GxP environments—including audit-ready documentation of temperature mapping (IQ/OQ), alarm logging, and calibration traceability to NIST-traceable references.
Software & Data Management
The embedded controller records real-time temperature and timer status but does not include onboard data logging or PC connectivity. For regulated applications, users integrate the DZF-6020 into validated environmental monitoring networks via optional analog (4–20 mA) or digital (RS485 Modbus RTU) output modules—enabling time-stamped acquisition into LIMS or SCADA platforms. When deployed in FDA-regulated settings, the system supports 21 CFR Part 11 compliance through externally managed electronic signatures, audit trails, and role-based access control implemented at the supervisory software layer. Calibration certificates, preventive maintenance logs, and vacuum leak test records are maintained separately per GLP/GMP documentation requirements.
Applications
- Pharmaceutical R&D: Residual solvent removal from APIs without racemization or polymorphic transition.
- Materials Science: Debinding of metal injection molded (MIM) parts and solvent extraction from aerogels.
- Academic Research: Preparation of anhydrous salts, catalyst supports, and MOF precursors under inert atmosphere.
- Quality Control Labs: Moisture content determination per USP and Ph. Eur. 2.2.32 using gravimetric vacuum drying protocols.
- Electronics Manufacturing: Pre-bake of PCB substrates and encapsulant preforms to eliminate outgassing-related delamination.
FAQ
Does the DZF-6020 include a built-in vacuum pump?
No. It is supplied without a vacuum pump. Users must select and install a compatible external pump rated for continuous operation at ≤10 Pa ultimate pressure.
What is the maximum allowable working temperature and its tolerance?
The maximum setpoint is 250 °C, with temperature uniformity maintained at ±1 °C across the chamber volume when stabilized under vacuum conditions.
Can the chamber be pressurized with inert gas above atmospheric pressure?
No. The DZF-6020 is designed for vacuum and inert gas purging only—not positive-pressure operation. The door seal and chamber construction are rated for vacuum service only.
Is the stainless-steel interior electropolished or passivated?
Yes—the SUS304 chamber undergoes electropolishing to Ra ≤0.4 µm, enhancing corrosion resistance and facilitating residue-free cleaning between batches.
How is temperature calibration verified during qualification?
Calibration is performed using three calibrated PT100 sensors placed at geometric center and opposing corners; results are documented in accordance with ISO/IEC 17025-accredited procedures.
