Yiheng BPG-9106S / BPG-9156S / BPG-9206S Corrosion-Resistant Drying Oven

Overview

The Yiheng BPG-9106S, BPG-9156S, and BPG-9206S series Corrosion-Resistant Drying Ovens are engineered for laboratories requiring reliable thermal processing in chemically aggressive environments. Unlike standard drying ovens constructed with 304 stainless steel or painted carbon steel, these models feature a fully integrated 316 stainless steel interior chamber — a material selected for its superior resistance to chloride-induced pitting, organic acids, alkaline solutions, and oxidizing agents commonly encountered in pharmaceutical stability testing, electroplating quality control, catalyst drying, and semiconductor wafer processing. The ovens operate on forced-air convection principles, utilizing a high-temperature-rated centrifugal blower and optimized duct geometry to ensure uniform heat distribution across the working chamber. Designed for continuous operation within a controlled temperature envelope of RT+10°C to 200°C, they deliver stable thermal conditions essential for moisture removal, pre-baking, curing, and aging protocols where material integrity must be preserved under corrosive exposure.

Key Features

• 316 stainless steel inner chamber, door liner, and shelving — certified for long-term resistance to HCl, HNO₃, NaOH, and mixed-acid vapors per ASTM A240 and ISO 15510 standards
• High-purity silicone rubber door gasket rated for continuous service up to 250°C, offering low compression set and minimal outgassing in inert or reactive atmospheres
• Microprocessor-based P.I.D temperature controller with digital LED display, programmable timer (up to 9999 minutes), and real-time deviation alarm
• Adjustable air inlet and exhaust dampers — enabling fine-tuned control over chamber atmosphere exchange rate and vapor retention time
• Independent mechanical over-temperature safety cut-off (optional) compliant with IEC 61000-4-2 and EN 61010-1 for fail-safe thermal protection
• Robust external housing fabricated from brushed 304 stainless steel with electropolished finish, minimizing surface crevices for easier decontamination

Sample Compatibility & Compliance

These ovens accommodate a wide range of sample formats including glass Petri dishes, ceramic crucibles, polymer trays, metal racks, and coated substrates. Their corrosion-resistant architecture ensures compatibility with samples exposed to residual halides, sulfate residues, or volatile organic bases. The design conforms to general laboratory safety requirements outlined in ISO/IEC 17025:2017 for equipment qualification, and supports GLP-compliant workflows when paired with optional data logging accessories. While not intrinsically rated for Class I Division 1 hazardous locations, the absence of internal ignition sources and sealed electrical compartments permits use in ventilated fume hood environments handling low-volatility corrosives.

Software & Data Management

The optional RS485 interface enables integration with SCADA systems or centralized lab monitoring platforms using Modbus RTU protocol. When connected to a compatible thermal printer (e.g., Epson TM-U220), the oven outputs timestamped temperature logs at user-defined intervals (1–60 min), supporting audit-ready documentation for FDA 21 CFR Part 11–aligned validation studies. Firmware supports dual-setpoint operation (main process + safety limit), event logging (door open/close, alarm activation, power interruption), and password-protected parameter modification — features critical for regulated QC/QA laboratories operating under cGMP or ISO 9001 frameworks.

Applications

• Drying of acid-washed filters and titration vessels in environmental water analysis labs (EPA Method 1664, ISO 11348)
• Thermal conditioning of corrosion test coupons prior to ASTM G31 immersion exposure
• Pre-baking of printed circuit board (PCB) substrates after electroless nickel plating
• Moisture removal from hygroscopic catalysts (e.g., Pt/C, Pd/BaSO₄) without surface oxidation or chloride residue buildup
• Stability storage of reference standards in pharmaceutical development (ICH Q1A–Q1E)
• Curing of fluoropolymer-coated instrumentation components exposed to aggressive cleaning agents

FAQ

Is the entire chamber—including shelves and support rails—made of 316 stainless steel?
Yes. All interior structural components, including adjustable shelf supports and removable wire shelves, are fabricated from ASTM F899-grade 316 stainless steel.
Can this oven be used under nitrogen purge conditions?
Yes. The adjustable inlet/exhaust ports allow connection to external gas manifolds; however, a dedicated purge-compatible version with welded conduit entries and pressure relief valve is available upon request.
What is the maximum allowable load weight per shelf?
Standard shelves support up to 15 kg uniformly distributed; reinforced shelf kits (optional) increase capacity to 25 kg per level.
Does the P.I.D controller support ramp-soak programming?
No. This model implements single-setpoint control with timer-based termination. Multi-step profiles require external programmable logic controllers or the optional Yiheng DataLink software suite.
Are calibration certificates traceable to NIST or CNAS provided with shipment?
Factory calibration reports (including as-found/as-left data at three points: 50°C, 100°C, and 150°C) are included. Full ISO/IEC 17025-accredited calibration with NIST-traceable thermistors is available as a value-added service.