OK-PCT Series High-Pressure Steam Sterilization & Accelerated Aging Test Chamber

Overview

The OK-PCT Series High-Pressure Steam Sterilization & Accelerated Aging Test Chamber is an engineered environmental stress test system designed for rigorous reliability evaluation of medical devices, packaging materials, pharmaceutical primary containers, and polymer-based components under controlled saturated steam conditions. Operating on the principle of accelerated moisture diffusion under elevated temperature and pressure, the chamber replicates long-term aging effects—such as hydrolytic degradation, seal integrity failure, and material embrittlement—in significantly reduced timeframes. Unlike conventional ovens or humidity chambers, the OK-PCT series maintains true saturated steam equilibrium across its entire working volume, ensuring thermodynamic consistency critical for ISO 11134-compliant sterilization validation and ASTM F1980-compliant accelerated stability testing. Its cylindrical SUS316 chamber geometry, precision-machined sealing interface, and multi-stage pressure containment architecture meet industrial pressure vessel safety standards while minimizing thermal gradients and condensate accumulation.

Key Features

• Microprocessor-based PID controller with dual-language (English/Chinese) interface, supporting real-time parameter monitoring, programmable test cycles, and event-triggered alarm logging.
• Cylindrical inner chamber constructed from electropolished SUS316 stainless steel—resistant to chloride-induced stress corrosion cracking and compatible with repeated sterilization-grade cleaning protocols.
• Pressure-actuated safety door lock mechanism: internal gauge pressure automatically reinforces door seal compression, eliminating reliance on mechanical latches and extending gasket service life beyond 5,000 cycles.
• Triple-layer safety architecture: (1) primary electronic overpressure cutoff at 95% of MAWP, (2) redundant mechanical safety valve calibrated to full-rated relief pressure, and (3) manual emergency depressurization lever compliant with ASME BPVC Section VIII requirements.
• Integrated auto-fill water system with conductive level sensing and low-water shutoff—designed for unattended operation up to 200 hours per fill under standard test conditions.
• Forced-convection airflow optimized for uniform steam distribution; validated spatial uniformity of ±0.5 °C and ±5 %RH across all chamber zones per IEC 60068-3-5.
• Configurable sample channel capacity (8–55 channels), supporting simultaneous monitoring of voltage, current, resistance, or thermocouple signals from DUTs during exposure.

Sample Compatibility & Compliance

The OK-PCT chamber accommodates a broad range of sample formats—including syringes, IV bags, blister packs, silicone tubing, polymeric implants, and electronic enclosures—via customizable stainless steel racks and non-reactive mounting fixtures. All models are configured to support IQ/OQ/PQ documentation packages aligned with FDA 21 CFR Part 11 data integrity expectations. The system’s pressure and temperature control fidelity meets the traceability and repeatability thresholds required for ASTM F1980 shelf-life extrapolation and ISO 11134 validation of steam sterilization processes. Optional calibration certificates (NIST-traceable) and third-party verification reports are available upon request for GMP-regulated environments.

Software & Data Management

Test parameters, real-time sensor traces (temperature, pressure, humidity), and alarm events are logged internally and exportable via USB mass storage mode in CSV format. The embedded controller supports RS-232 serial communication for integration into centralized lab management systems (LIMS) or SCADA platforms. Audit trail functionality records operator actions, setpoint changes, and system faults with timestamp and user ID—enabling compliance with GLP and 21 CFR Part 11 electronic record requirements when paired with appropriate access controls and electronic signatures. No proprietary software installation is required for basic data retrieval.

Applications

• Accelerated aging studies for ISO 11607–compliant sterile barrier systems.
• Hydrolytic stability assessment of biodegradable polymers (e.g., PLGA, PCL) under simulated physiological conditions.
• Seal strength validation of heat-sealed pouches and thermoformed trays exposed to saturated steam.
• Corrosion resistance testing of implant-grade alloys (e.g., Ti-6Al-4V, CoCr) per ASTM F2129.
• Process qualification of terminal sterilization cycles in contract manufacturing organizations (CMOs).
• Failure mode analysis of MEMS sensors and hermetic microelectronics subjected to moisture ingress stress.

FAQ

What pressure units does the controller display?

The controller displays gauge pressure in kg/cm², with resolution of 0.1 kg/cm². Conversion to MPa or psi is supported in exported data logs.

Is the chamber suitable for validation per ISO 11134?

Yes—the chamber’s temperature uniformity, pressure stability, and saturation control performance meet the minimum requirements for Class II and Class III sterilization process validation when operated within specified ranges.

Can the system be integrated into a facility’s Building Management System (BMS)?

RS-232 output enables basic status reporting (running/idle/alarm); full BMS integration requires optional protocol converter for Modbus RTU or BACnet MS/TP.

Does the unit include a validation support package?

Standard delivery includes IQ/OQ templates, sensor calibration points, and uncertainty budgets. PQ execution services are available through authorized application engineers.

What maintenance intervals are recommended?

Gasket inspection every 500 cycles; safety valve certification annually; full chamber leak test and sensor recalibration biannually per ISO/IEC 17025 guidelines.