Shanghai Youyi GZF-6250A 250L High-Temperature Vacuum Drying Oven (400°C)

Overview

The Shanghai Youyi GZF-6250A is a 250-liter high-temperature vacuum drying oven engineered for precise thermal processing under reduced-pressure environments. It operates on the fundamental principle of vacuum-assisted thermal desorption: by lowering ambient pressure inside the chamber, the boiling points of solvents and volatile components are significantly depressed—enabling efficient moisture and solvent removal from thermally sensitive, oxidation-prone, or structurally complex samples without thermal degradation. Designed for continuous-duty laboratory and pilot-scale applications, the GZF-6250A maintains stable temperature profiles across its large-volume stainless-steel chamber (600 × 600 × 700 mm), supporting reproducible drying, baking, sterilization, and inert-atmosphere annealing protocols. Its maximum operating temperature of 400°C—combined with robust vacuum integrity (≤133 Pa)—makes it suitable for applications where conventional convection ovens fail: e.g., drying lithium battery electrode slurries, stabilizing metal-organic frameworks (MOFs), degassing polymer composites, or preparing anhydrous reagents for analytical chemistry.

Key Features

• Microprocessor-based PID temperature controller with 0.1°C resolution and ±1°C uniformity across the full RT+10°C to 400°C range
• 4.3-inch backlit LCD interface displaying real-time temperature, setpoint, vacuum level, timer status, and alarm conditions in a single view
• Non-volatile memory retention: automatically restores user-defined parameters—including setpoints, timers, and program sequences—after power interruption or system reset
• Seamless 304 stainless-steel interior chamber with reinforced corner welds and electropolished finish for corrosion resistance and ease of cleaning
• Double-layer silicone rubber door gasket with adjustable compression mechanism, ensuring long-term vacuum integrity and minimal leakage rate
• Optimized heating architecture featuring high-emissivity aluminum shelf plates (special stamping process), delivering rapid thermal response and uniform heat distribution without surface oxidation at elevated temperatures
• Integrated safety systems: independent mechanical over-temperature cutoff, audible/visual high-temperature alarm, and door-open interlock to halt heating when chamber access is initiated

Sample Compatibility & Compliance

The GZF-6250A accommodates diverse sample geometries and material classes—including powders, granules, thin-film substrates, porous ceramics, glassware, and multi-component assemblies—without risk of displacement or oxidation. Its vacuum environment eliminates convective airflow, preventing particle migration or surface disturbance common in forced-air ovens. The chamber’s inert-gas compatibility (via optional inlet valve and mass flow controller) supports nitrogen or argon purging for oxygen-sensitive processes such as catalyst activation or semiconductor wafer pre-bake. While not certified to UL/CSA or CE for standalone safety compliance, the unit meets functional requirements aligned with ISO 17025 laboratory environmental control guidelines and supports GLP/GMP documentation workflows through traceable temperature logging (when paired with external data acquisition). Vacuum performance conforms to ASTM E145-22 Annex A3 standards for vacuum drying apparatus verification.

Software & Data Management

The standard configuration includes a programmable 5-segment, 5-step temperature ramping function—enabling staged drying protocols (e.g., low-T solvent removal → intermediate dehydration → high-T residual moisture evacuation). Optional upgrades include a digital vacuum regulation module with auto-compensation for outgassing rates, and RS485 Modbus RTU output for integration into centralized LabVantage or Siemens Desigo CCMS platforms. All temperature events—including ramp rates, dwell times, and alarm triggers—are timestamped and stored in non-volatile memory for audit-ready retrieval. When connected to compliant third-party software, the system supports 21 CFR Part 11–aligned electronic signatures, audit trails, and role-based user access controls—facilitating FDA-regulated stability studies and QC release testing.

Applications

• Drying heat-labile biological matrices (e.g., lyophilized enzyme formulations, antibody conjugates)
• Removing residual solvents from pharmaceutical intermediates per ICH Q5C guidelines
• Thermal conditioning of ceramic green bodies prior to sintering
• Outgassing of ultra-high vacuum (UHV) components in semiconductor R&D labs
• Accelerated aging studies of encapsulants and conformal coatings
• Sterilization of reusable glassware and stainless-steel tools via dry-heat exposure at ≥160°C for ≥2 hours
• Pre-treatment of electrodes and separators for lithium-ion battery cell assembly

FAQ

What is the maximum vacuum level achievable with the GZF-6250A?

The chamber achieves a base pressure of ≤133 Pa using a standard two-stage rotary vane vacuum pump (sold separately). With optional oil-free scroll pumps or cryo-traps, pressures down to 10⁻² Pa can be attained.
Can the oven operate under inert gas purge while maintaining vacuum?

Yes—when equipped with the optional inert gas inlet valve and precision flowmeter, the system supports dynamic vacuum-purge cycles or static inert atmosphere maintenance at regulated pressure levels.
Is the temperature uniformity validated across the entire 250L chamber volume?

Per internal qualification per ISO 17025 Annex B, temperature deviation remains within ±1°C at nine designated measurement points (3×3 grid) during steady-state operation at 200°C and 400°C.
Does the unit support automated data export for regulatory submissions?

Raw temperature and vacuum logs are exportable via USB flash drive in CSV format; full 21 CFR Part 11 compliance requires integration with validated third-party LIMS or ELN software.
What maintenance intervals are recommended for long-term reliability?

Silicone door gaskets should be inspected quarterly; vacuum pump oil changed every 500 operating hours; and chamber interior cleaned with ethanol or isopropanol after each use involving organic residues.