JingHong DZF-6050TH & DZF-6050TG Vacuum Drying Oven

Overview

The JingHong DZF-6050TH and DZF-6050TG are benchtop vacuum drying ovens engineered for precise thermal processing under reduced-pressure conditions. Designed in accordance with fundamental principles of vacuum thermodynamics, these ovens remove moisture and volatile solvents from heat-sensitive samples by lowering the boiling point of liquids—enabling effective drying at significantly lower temperatures than atmospheric ovens. This minimizes thermal degradation, oxidation, and structural alteration in pharmaceutical intermediates, polymer precursors, biological specimens, and electronic components. The dual-model configuration (TH and TG) reflects differentiated control architecture: the TH variant integrates a microprocessor-based PID temperature controller with dual digital display (setpoint/actual), while the TG version adds enhanced data logging capability and extended vacuum stability optimization for regulated environments.

Key Features

• High-integrity stainless steel chamber (1Cr18Ni9Ti grade) ensures corrosion resistance, long-term dimensional stability, and compliance with ISO 14644-1 Class 8 cleanroom-compatible surface finish requirements.
• Double-layer tempered glass observation door with adjustable silicone gasket seal maintains vacuum integrity down to <133 Pa and enables real-time visual monitoring without process interruption.
• PID auto-tuning temperature controller delivers ±1°C temperature uniformity across the full 415 × 370 × 345 mm working chamber, with 0.1°C resolution and programmable ramp/soak profiles.
• Forced-air circulation system ensures homogeneous heat distribution and eliminates cold spots—critical for reproducible drying kinetics in QC/QA workflows.
• Integrated mechanical vacuum gauge (analog pointer type) provides immediate, drift-free pressure feedback; compatible with external digital vacuum sensors for GLP-compliant audit trails.
• Modular heating power regulation allows fine-tuned energy delivery—essential for low-temperature desiccation of hygroscopic APIs or lyophilized biomaterials without overshoot.

Sample Compatibility & Compliance

These ovens accommodate a broad range of sample formats including Petri dishes, weighing boats, glass vials, aluminum pans, and custom fixtures up to 3 kg total load. They are routinely deployed in laboratories adhering to USP , ISO 12098:2017 (determination of moisture content), and ASTM D2298 (thermal stability testing of adhesives). While not intrinsically certified for IEC 61010-1 or FDA 21 CFR Part 11, the DZF-6050TG’s analog-to-digital signal path supports third-party validation packages for GMP/GLP environments when paired with qualified vacuum pumps (e.g., 2XZ-4 rotary vane pump, included) and calibrated reference thermometers.

Software & Data Management

The DZF-6050TH operates via embedded firmware with local setpoint storage (up to 8 programs) and real-time temperature logging to internal memory (10,000-point capacity). The DZF-6050TG extends functionality with RS-485 Modbus RTU interface, enabling integration into LabVantage, DeltaV, or custom SCADA systems for centralized monitoring. Both models support optional USB data export modules (sold separately) compliant with IEEE 11073-10201 for time-stamped, tamper-evident CSV output—meeting ALCOA+ data integrity criteria when validated per Annex 11.

Applications

• Pharmaceutical: Residual solvent removal from active pharmaceutical ingredients (APIs) prior to tablet compression; moisture analysis of excipients per USP .
• Materials Science: Degassing of ceramic green bodies and polymer composites before sintering or curing.
• Electronics: Pre-bake of PCB substrates and encapsulated semiconductors to prevent popcorning during reflow.
• Academic Research: Solvent exchange in aerogel synthesis; thermal aging studies of battery electrode coatings under inert vacuum.
• Food & Agriculture: Low-temperature dehydration of botanical extracts while preserving thermolabile phytochemicals (e.g., flavonoids, terpenes).

FAQ

What vacuum level is achievable, and how is it maintained?
The system achieves and sustains <133 Pa using the integrated 2XZ-4 rotary vane vacuum pump. Vacuum integrity is ensured by the molded silicone door gasket and rigid stainless steel chamber design—verified per ISO 2859-1 sampling plans during factory acceptance testing.
Is the oven suitable for oxygen-sensitive materials?
Yes—when operated under nitrogen or argon purge (via optional inlet valve kit), the chamber can be backfilled to 0.5–1.5 bar(g) prior to vacuum cycling, enabling inert-atmosphere drying protocols required for lithium-ion cathode precursors or organometallic catalysts.
Can temperature and vacuum data be exported for regulatory submission?
The DZF-6050TG supports timestamped ASCII log export via RS-485; when paired with IQ/OQ-validated communication drivers and electronic signature-enabled software (e.g., LabArchives ELN), outputs meet FDA 21 CFR Part 11 record retention requirements.
What maintenance is required for long-term vacuum performance?
Annual replacement of vacuum pump oil and inspection of the silicone gasket for compression set are recommended. Chamber passivation with citric acid solution every 6 months prevents chloride-induced pitting in high-humidity coastal installations.
Does the oven comply with CE or UL safety standards?
The unit meets GB/T 14710–2009 (Chinese national standard for environmental adaptability of medical electrical equipment) and includes overtemperature cut-off, ground-fault protection, and thermal fuse redundancy—but lacks CE marking or UL 61010-1 certification for direct EU/US market placement without local representative validation.