Boxun BXK-50S Vacuum Drying Oven

Overview

The Boxun BXK-50S Vacuum Drying Oven is an engineered solution for precise, low-temperature dehydration of thermally sensitive, oxidation-prone, or structurally complex samples under controlled reduced-pressure conditions. Based on the physical principle that vapor pressure decreases exponentially with ambient pressure, the BXK-50S enables efficient moisture removal at substantially lower temperatures than atmospheric drying—critical for preserving labile compounds such as enzymes, pharmaceutical intermediates, polymer precursors, and botanical extracts. Unlike conventional convection ovens, this system eliminates convective air currents that may displace fine powders or compromise sample integrity, while its integrated vacuum pump enclosure ensures stable operation within ISO Class 7 cleanroom-compatible laboratory environments. Designed for compliance-driven workflows, the unit supports traceable process documentation and meets baseline mechanical and electrical safety requirements per IEC 61010-1.

Key Features

• Stainless steel (SUS304) interior chamber with seamless, radius-rounded corners for enhanced cleanability and corrosion resistance—validated for repeated exposure to organic solvents and aqueous residues.
• Microprocessor-based PID temperature controller with LCD interface, supporting real-time monitoring of chamber temperature, timer status, over-temperature alarm, and power-failure recovery with non-volatile memory retention.
• Dual-layer tempered glass observation door with reinforced frame, enabling visual inspection without vacuum breakage or thermal interruption.
• Two independently heated stainless steel shelves, each equipped with dedicated PT100 sensors and digital temperature readouts—allowing simultaneous multi-zone thermal profiling for heterogeneous sample loads.
• Integrated noise-dampened cabinet housing a 2 L/s oil-free vacuum pump, reducing operational sound pressure level by ≥40 dB(A) compared to external pump configurations—ideal for shared analytical labs and GLP-compliant facilities.
• Real-time vacuum monitoring via built-in digital vacuum gauge with automatic re-evacuation trigger when pressure deviates beyond user-defined thresholds (e.g., due to sample outgassing or seal micro-leakage).

Sample Compatibility & Compliance

The BXK-50S accommodates diverse sample formats including lyophilized powders, granular catalysts, ceramic green bodies, chromatography columns, optical components, and sterilized glassware. Its inert stainless steel chamber and absence of circulating air prevent cross-contamination and particle migration—making it suitable for ASTM E2877-22 (standard practice for vacuum drying of hygroscopic materials) and aligned with USP guidelines for sterile product drying. While not certified to FDA 21 CFR Part 11 out-of-the-box, the system’s parameter logging capability (via optional RS485/Modbus interface) supports integration into validated data acquisition systems meeting GMP audit requirements for temperature and vacuum traceability.

Software & Data Management

The BXK-50S operates autonomously via its embedded firmware, storing up to 10 programmable drying protocols with temperature ramp/soak profiles and vacuum hold durations. All active parameters—including shelf-specific setpoints, actual chamber pressure, elapsed time, and alarm history—are retained in EEPROM during mains interruption and restored upon restart. For extended data governance, optional analog output (0–5 V / 4–20 mA) and Modbus RTU communication enable connection to SCADA platforms or LIMS, facilitating automated report generation compliant with ISO/IEC 17025 clause 7.7 (result reporting) and internal SOPs governing environmental monitoring records.

Applications

• Routine dehydration of heat-labile biological standards prior to HPLC calibration.
• Post-synthesis drying of metal-organic frameworks (MOFs) without framework collapse.
• Residual solvent removal from API batches under cGMP-aligned process windows.
• Moisture conditioning of reference materials for gravimetric moisture analysis (ASTM D2298).
• Pre-sterilization drying of surgical instruments and glass vials in QC microbiology labs.
• Controlled desolvation of perovskite precursor films in photovoltaic R&D.

FAQ

What is the maximum operating temperature under full vacuum?
The BXK-50S maintains rated temperature stability up to 250°C at pressures ≤133 Pa, verified per internal thermal mapping per ISO 14644-3 Annex B.
Can the oven be used for inert-gas purging instead of vacuum?
No—the system lacks gas inlet/outlet ports and is engineered exclusively for vacuum operation; modification voids CE-equivalent safety certification.
Is validation support documentation available?
Yes—Factory Acceptance Test (FAT) reports, IQ/OQ templates, and temperature uniformity mapping protocols are provided upon request for qualified purchasers.
How often does the vacuum pump require maintenance?
With continuous use, oil change intervals are recommended every 500 operating hours; oil-free pump variants are available under custom configuration (model suffix “-D”).
Does the unit comply with electromagnetic compatibility (EMC) standards?
Yes—it conforms to EN 61326-1:2013 for laboratory equipment and passes radiated/conducted emission tests per EN 55011 Group 1, Class B.