YSEI SHH-XXW-SD Series Walk-in Pharmaceutical Stability Chamber

Overview

The YSEI SHH-XXW-SD Series Walk-in Pharmaceutical Stability Chamber is a precision-engineered environmental test system designed to meet the stringent requirements of ICH Q1A(R3), USP , FDA 21 CFR Part 211, and Annex 11 for computerized system validation. It operates on a dual-control principle—simultaneous regulation of temperature and relative humidity within a thermally insulated, walk-in chamber—to provide long-term, high-fidelity storage and stability assessment conditions for pharmaceutical products. Unlike benchtop or reach-in chambers, this series is engineered for batch-scale evaluation of drug substances and products under controlled climatic conditions, supporting both accelerated stability testing (e.g., 40 °C/75 % RH) and long-term storage protocols (e.g., 25 °C/60 % RH). Its modular architecture enables full dimensional customization to integrate seamlessly into existing cleanroom or QC laboratory infrastructure while maintaining ISO 14644-1 Class 8 (or better) compatible airflow management.

Key Features

• Custom-built internal volume (D×W×H) with structural integrity compliant with GB/T 10586–2025 and ASTM E2035–22 for walk-in environmental chambers
• Dual PID-controlled refrigeration and steam-based humidification systems ensuring stable operation across 20–50 °C and 50–90 % RH ranges
• Temperature uniformity maintained at ±1 °C and control accuracy at ±0.5 °C—validated per IQ/OQ protocols aligned with GMP Annex 15
• Triple-layer data recording architecture: (1) real-time RS485-linked PC logging, (2) 64 MB internal circular buffer with timestamped setpoint/actual value history, and (3) removable SD card export with configurable sampling intervals (as low as 1 minute)
• Independent safety interlocks including compressor overload protection, dry-run prevention for humidifier, chamber overtemperature cutoff, and battery-backed SMS alerting for power failure or parameter deviation
• Touchscreen HMI with multilingual UI (English default), intuitive navigation, and audit-trail-enabled user access levels per 21 CFR Part 11 requirements

Sample Compatibility & Compliance

The SHH-XXW-SD accommodates diverse pharmaceutical sample formats—including vials, blister packs, bottles, syringes, and bulk containers—within fully accessible walk-in interiors. Chamber airflow design follows laminar flow principles to minimize thermal stratification and ensure representative exposure across all shelf levels. All materials in contact with conditioned air (e.g., stainless-steel interior panels, silicone gaskets, corrosion-resistant ductwork) comply with USP and ISO 10993-5 biocompatibility standards. The system is pre-qualified to satisfy regulatory expectations outlined in the 2020 Chinese Pharmacopoeia Volume IV (General Chapters 9001 and 9002), ICH Q5C (stability of biotechnological/biological products), and WHO TRS 992 Annex 10. Full IQ/OQ documentation packages—including calibration certificates, sensor traceability to NIM (China National Institute of Metrology), and risk-based verification reports—are provided upon request.

Software & Data Management

The integrated Sims monitoring platform supports centralized supervision of up to 30 SHH-XXW-SD units from a single workstation. It delivers role-based access control, electronic signature capability, and automated generation of raw data summaries compliant with ALCOA+ principles. Data exports are formatted as CSV or PDF with embedded metadata (operator ID, instrument serial number, validation status). Optional 21 CFR Part 11 compliance modules include time-stamped audit trails, electronic signature workflows, and secure user authentication via LDAP integration. Historical datasets are retained in encrypted format on local NAS or cloud-hosted repositories (AWS S3 or Azure Blob Storage), with retention policies configurable to match organizational SOPs and regional regulatory timelines (e.g., 15 years post-product discontinuation).

Applications

• ICH-aligned accelerated stability studies (Q1A) for new molecular entities and generic drug submissions
• Long-term real-time stability monitoring per Q5C and national pharmacopoeial mandates
• Bracketing and matrixing study execution for multi-dose packaging configurations
• Excipient compatibility screening under defined hygrothermal stress conditions
• Reference standard storage under ICH Q5D-specified conditions
• Process validation support for lyophilization cycle development and cold chain qualification

FAQ

Does the SHH-XXW-SD Series support 21 CFR Part 11 compliance out-of-the-box?

Yes—when equipped with the optional Validation Package, the system includes electronic signature functionality, audit trail generation, and user permission hierarchies meeting FDA requirements.
Can humidity be controlled independently of temperature?

No—humidity and temperature are co-regulated to maintain thermodynamic equilibrium; however, target setpoints for both parameters are fully programmable and decoupled in scheduling logic.
Is on-site IQ/OQ execution available?

Yes—YSEI provides certified field engineers for installation qualification, operational qualification, and protocol execution in accordance with ISO/IEC 17025-accredited practices.
What is the typical lead time for a custom-sized unit?

Standard delivery is 12–14 weeks after final dimensional approval and deposit confirmation; expedited builds (8–10 weeks) are available with premium scheduling.
Are replacement parts and firmware updates supported beyond the 1-year warranty?

Yes—lifetime technical support, spare parts availability, and firmware version upgrades are maintained through YSEI’s global service network, with SLAs aligned to ISO 9001:2015 service management standards.