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

Overview

The YSEI SHH-XXW-SD Series Walk-in Pharmaceutical Stability Chambers are engineered for long-term, high-fidelity environmental simulation in compliance with global regulatory frameworks governing drug stability testing. These chambers operate on a precision-controlled forced-air convection principle, integrating independent refrigeration, heating, humidification, and dehumidification subsystems to maintain tightly specified temperature and relative humidity (RH) conditions over extended durations—routinely spanning months or years. Designed explicitly for ICH Q1A(R3), USP , FDA Guidance for Industry (2022), and Chinese Pharmacopoeia 2020 Edition Chapter 9001 requirements, the SHH-XXW-SD series supports both accelerated stability studies (e.g., 40 °C/75 % RH for 6 months) and long-term storage trials (e.g., 25 °C/60 % RH for 36 months). Unlike standard reach-in chambers, the walk-in architecture enables scalable batch evaluation of commercial-scale packaging configurations—including primary containers, secondary cartons, and tertiary palletized loads—thereby eliminating extrapolation risks associated with small-sample testing.

Key Features

• Customizable internal volume: Chamber dimensions (depth × width × height) are fully configurable to match facility layout constraints and throughput requirements—supporting capacities from 2 m³ to over 50 m³ without compromising thermal/hygrometric performance.
• High-stability dual-loop climate control: Separate PID-regulated loops govern temperature and humidity, minimizing cross-coupling effects; integrated dew-point-based humidity control ensures stable RH even during ambient temperature fluctuations.
• Triple-layer data integrity architecture: (1) Real-time RS485-modbus logging to external PC-based LIMS or SCADA systems; (2) Onboard 64 MB non-volatile memory with user-configurable sampling intervals (1 min minimum); (3) Optional thermal printer with adjustable print cycles for audit-ready hardcopy records.
• Comprehensive safety redundancy: Independent overtemperature cutoff (separate from main controller), low-water alarm for steam humidifier, compressor overload protection, and optional GSM-enabled SMS alerting for out-of-specification events—including power failure, temperature excursion >±1.5 °C, or RH deviation >±5 % RH.
• Regulatory-grade validation support: Pre-validated IQ/OQ documentation packages compliant with ASTM E2500-22 and ISO 14644-3; all chambers ship with calibration certificates traceable to NIM (National Institute of Metrology, China) and include electronic audit trail functionality meeting FDA 21 CFR Part 11 requirements when used with Sims software.

Sample Compatibility & Compliance

The SHH-XXW-SD accommodates full-size pharmaceutical packaging formats—blister packs, vials, syringes, IV bags, and shelf-ready cartons—without requiring sample miniaturization. Its uniform airflow design (validated per ISO 14644-3 Class 5 protocols) ensures ≤±1 °C spatial temperature variation across the entire working volume and ≤±3 % RH gradient at any point within the chamber. The system complies with GB/T 10586–2025 (Technical Specifications for Damp Heat Test Chambers), ICH Q5C (Stability Testing of Biotechnological/Biological Products), and EU Annex 15 (Qualification and Validation). All control firmware is validated under GMP-aligned change control procedures, and the humidification system uses pharmaceutical-grade deionized water with optional UV sterilization loop integration.

Software & Data Management

Sims™ Remote Monitoring Software provides centralized management of up to 30 SHH-XXW-SD units via secure HTTPS or VPN connection. The platform delivers real-time dashboards, automated report generation (PDF/CSV), deviation alerts with root-cause tagging, and full electronic signature support per ALCOA+ principles. Data export supports CSV, Excel, and direct SQL database ingestion. All historical datasets retain full metadata—including operator ID, parameter setpoints, environmental logs, and event timestamps—with immutable hash verification. Audit trails are retained for ≥15 years and support GLP/GMP inspection readiness.

Applications

• ICH-compliant accelerated and long-term stability studies for small-molecule APIs, biologics, and combination products.
• Real-time shelf-life determination under defined storage conditions (e.g., 30 °C/65 % RH for tropical climates).
• Excipient compatibility screening under controlled humidity stress.
• Package integrity validation—including moisture vapor transmission rate (MVTR) assessment of barrier materials.
• Reference standard storage in accordance with USP and Ph. Eur. 2.2.47 requirements.

FAQ

Does the SHH-XXW-SD meet FDA 21 CFR Part 11 requirements for electronic records?

Yes—when deployed with Sims software and configured with role-based access controls, digital signatures, and time-stamped audit trails, the system satisfies all technical and procedural criteria of 21 CFR Part 11.
Can the chamber be validated for GMP environments?

Absolutely—the unit ships with IQ/OQ protocols aligned with ASTM E2500-22 and includes factory-assembled sensor mapping reports, calibration certificates, and installation qualification checklists.
What is the maximum allowable internal volume?

There is no fixed upper limit; chambers have been successfully commissioned up to 60 m³ while maintaining ±0.5 °C temperature accuracy and ≤±3 % RH uniformity.
Is remote firmware update supported?

Firmware updates are performed offline via encrypted SD card import to prevent unauthorized network exposure; no over-the-air (OTA) updates are enabled by default.
How is humidity calibrated and maintained over time?

Chambers include dual NIST-traceable humidity sensors (capacitive + chilled mirror) with automatic drift compensation; annual recalibration services are available through YSEI-certified field engineers.