Yiheng DZF-6000 Series Benchtop Vacuum Drying Oven with Microprocessor Temperature Control and Timer Function

Overview

The Yiheng DZF-6000 Series Benchtop Vacuum Drying Oven is an engineered solution for controlled thermal processing under reduced-pressure environments. It operates on the principle of lowering the boiling point of solvents and moisture through vacuum application—enabling efficient, low-temperature drying of thermolabile compounds, hygroscopic materials, pharmaceutical intermediates, and oxidation-prone samples. Unlike conventional forced-air ovens, this system eliminates oxygen-mediated degradation pathways by maintaining a stable vacuum or inert gas atmosphere (e.g., nitrogen or argon), making it suitable for applications governed by ISO 17025-accredited laboratories, USP drying guidelines, and GLP-compliant stability studies. Designed for benchtop deployment in QC labs, R&D facilities, and academic research spaces, the DZF-6000 series integrates microprocessor-based PID temperature regulation with programmable timing logic to ensure repeatability across drying cycles.

Key Features

• Microprocessor-controlled PID temperature regulation with 0.1°C resolution and ±1°C uniformity across the chamber volume.
• Benchtop footprint optimized for space-constrained laboratory environments; stainless steel (304) interior chamber resistant to corrosion and compatible with routine cleaning protocols.
• Dual-layer tempered glass observation window with anti-scratch coating—provides real-time visual monitoring without compromising vacuum integrity.
• Adjustable door latching mechanism paired with a one-piece molded silicone gasket ensures consistent sealing performance down to 133 Pa ultimate vacuum.
• Integrated inert gas inlet port (¼” NPT) enables rapid purging and backfilling with nitrogen or argon—critical for handling air-sensitive catalysts, lithium battery electrode coatings, or polymer precursors.
• Forced-air convection heating system enhances thermal homogeneity and reduces drying time by ≥40% compared to static vacuum ovens, as validated per ASTM E2078-20 test methodology.

Sample Compatibility & Compliance

The DZF-6000 accommodates a broad spectrum of sample formats—including Petri dishes, weighing boats, crucibles, vials, and custom trays—within its rectangular chamber geometry. Its RT+10°C to 200°C operating range supports solvent removal (e.g., acetone, ethanol, THF), residual moisture reduction in APIs, pre-baking of sensor substrates, and desiccation of nanomaterial dispersions. The unit complies with IEC 61010-1:2010 safety standards for electrical equipment used in laboratory settings. While not certified for Class I Division 1 hazardous locations, its design aligns with general requirements for non-explosive ambient use under ISO/IEC 17025 clause 5.4.2 (equipment suitability). Optional calibration certificates traceable to NIM (National Institute of Metrology, China) are available upon request.

Software & Data Management

The embedded controller supports up to 99 programmable segments with ramp-soak profiles and auto-start timer functions. All setpoints, actual temperatures, vacuum status, and elapsed time are displayed on a high-contrast LCD interface. Though no external PC connectivity (e.g., RS-232 or Ethernet) is standard, optional analog output (4–20 mA) enables integration into centralized lab monitoring systems. For audit-ready operations, users may manually log cycle parameters—including start/end timestamps, target vacuum level, and final chamber temperature—in accordance with FDA 21 CFR Part 11 documentation practices. Firmware updates are performed via USB interface using Yiheng’s proprietary configuration utility.

Applications

• Drying heat-sensitive biological reagents (e.g., enzymes, antibodies, lyophilized standards) without denaturation.
• Removing trace solvents from thin-film photovoltaic layers prior to characterization.
• Conditioning reference standards for gravimetric moisture analysis (ASTM D4442).
• Pre-treating ceramic green bodies and metal-organic frameworks (MOFs) before sintering or activation.
• Stabilizing electrochemical components—such as solid-state electrolyte pellets—under inert atmosphere to prevent hydrolysis.
• Accelerated aging studies of packaging adhesives and conformal coatings under controlled thermal-vacuum stress.

FAQ

What is the maximum achievable vacuum level, and how is it measured?
The DZF-6000 achieves an ultimate vacuum of ≤133 Pa (1 Torr), verified using a calibrated Pirani gauge during factory acceptance testing.
Can the chamber be backfilled with nitrogen automatically?
No automatic gas control is built-in; however, the standard ¼” NPT inlet allows manual or externally regulated inert gas introduction via a pressure-reducing valve and flowmeter.
Is the stainless steel chamber electropolished or passivated?
The interior uses brushed AISI 304 stainless steel; electropolishing is not standard but can be specified as a customization option.
Does the unit include a vacuum pump?
No—the DZF-6000 requires an external two-stage rotary vane vacuum pump (recommended ultimate vacuum ≤10 Pa) for optimal performance.
How often should the silicone door gasket be replaced?
Under normal usage (≤8 hrs/day, 5 days/week), replacement is recommended every 18–24 months or when vacuum hold time drops below 30 minutes at 133 Pa.