Yoyi DZF-6250 Vertical Vacuum Drying Oven

Overview

The Yoyi DZF-6250 Vertical Vacuum Drying Oven is an engineered solution for precise, oxygen-free thermal processing of heat-sensitive, oxidation-prone, or chemically unstable materials. Operating on the principle of vacuum-assisted convective and conductive drying, it removes moisture and volatile components at reduced pressure—lowering boiling points and minimizing thermal degradation. Unlike conventional hot-air ovens, the DZF-6250 maintains a controlled low-oxygen or inert-gas atmosphere (via optional inlet valve), enabling safe dehydration of pharmaceutical actives, biological samples, polymer precursors, catalysts, and nanomaterials without decomposition, discoloration, or surface oxidation. Its vertical architecture maximizes floor-space efficiency while accommodating tall or stacked sample configurations—ideal for laboratories with constrained benchtop area but high throughput demands.

Key Features

• Stainless steel (SUS304) interior chamber with seamless welding and polished finish—resistant to corrosion, easy to clean, and compliant with GLP cleaning validation protocols.
• Microprocessor-based PID temperature controller with 0.1°C resolution and ±1°C uniformity across the 600 × 600 × 700 mm working volume—ensuring reproducible thermal profiles per ISO 17025 calibration requirements.
• Integrated vacuum system with built-in cabinet housing a 2 L/s or optional 4 L/s dual-stage rotary vane pump—capable of achieving and sustaining ≤133 Pa (1 Torr) base pressure, verified per ASTM E29-23 standard test methods.
• Reinforced double-layer tempered glass door with silicone gasket seal—providing real-time visual monitoring while maintaining vacuum integrity; door-tightness adjustable via dual-point compression mechanism.
• Four fixed, anodized aluminum shelves with optimized thermal conductivity—designed for rapid heat transfer and minimal thermal lag during ramp-hold cycles.
• Power-fail recovery function with non-volatile memory—automatically restores setpoints, timer status, and vacuum level upon re-energization, supporting uninterrupted operation in regulated environments.
• Front-panel LCD display with intuitive menu navigation—showing real-time temperature, vacuum pressure, elapsed time, and program stage—all accessible without opening the chamber.

Sample Compatibility & Compliance

The DZF-6250 accommodates a broad spectrum of sample formats: glass desiccators, Petri dishes, weighing boats, stainless steel trays, and custom vacuum flasks (e.g., optional vacuum drying jars). It supports drying of lyophilized intermediates, ceramic green bodies, battery electrode coatings, herbal extracts, and residual solvent removal from API batches. The chamber design conforms to IEC 61010-1 safety standards for laboratory electrical equipment. When equipped with programmable controller and audit-trail logging (optional), the system supports FDA 21 CFR Part 11 compliance for electronic records in GMP-regulated pharmaceutical and biotech labs. All materials in contact with samples meet USP Class VI biocompatibility criteria.

Software & Data Management

While the base unit operates via standalone microcontroller, optional upgrades include a PC-compatible RS485 interface and YoyiVacControl™ software—enabling remote parameter setting, real-time data logging (temperature + vacuum vs. time), CSV export, and automated report generation. Data logs include timestamped entries with operator ID fields, supporting traceability under ISO/IEC 17025 Clause 7.7. For high-integrity applications, the programmable version provides up to 30 segment temperature/vacuum ramps with hold steps, slope control, and event-triggered alarms (e.g., over-temperature, vacuum breach).

Applications

• Pharmaceutical R&D: Residual solvent removal from small-molecule APIs and peptide intermediates under inert gas blanket.
• Materials Science: Debinding of metal injection molded (MIM) parts, pre-sintering of ceramics, and moisture elimination from MOF frameworks.
• Academic Research: Drying of TEM grid-mounted biological specimens, graphene oxide dispersions, and electrochromic thin films without cracking.
• Quality Control Labs: Moisture content determination per USP and ASTM D2298 for polymers, adhesives, and composites.
• Environmental Testing: Stabilization of soil and sediment samples prior to heavy-metal leaching analysis (EPA Method 1311).

FAQ

What vacuum level can the DZF-6250 achieve, and how is it measured?
The oven achieves ≤133 Pa (1 Torr) using its integrated dual-stage rotary vane pump. Vacuum level is monitored continuously via a calibrated analog Bourdon-tube gauge mounted on the front panel.
Can inert gases like nitrogen or argon be introduced during drying?
Yes—when fitted with the optional inert gas inlet valve and precision flowmeter (0–10 L/min range), users can purge and maintain a positive-pressure inert atmosphere throughout the cycle.
Is the chamber pressure monitored digitally or analogically?
Standard configuration includes an analog vacuum gauge; digital vacuum transducer integration is available as a factory-configured option with RS485 output.
How many shelves are included, and are they removable?
Four fixed-position aluminum shelves are supplied; they are not designed for extraction to preserve chamber integrity and thermal uniformity.
Does the DZF-6250 support validation documentation (IQ/OQ/PQ)?
Yes—Yoyi provides vendor-supplied IQ/OQ templates and calibration certificates traceable to NIST standards; PQ execution requires user-defined protocols aligned with internal SOPs.