YiHeng Walk-in Pharmaceutical Stability Testing Chamber LHH-Series

Overview

The YiHeng Walk-in Pharmaceutical Stability Testing Chamber LHH-Series is an engineered environmental simulation system designed specifically for long-term and accelerated stability testing of pharmaceutical products in compliance with ICH Q1–Q5 guidelines, the Chinese Pharmacopoeia (2020 Edition) Stability Testing Guidance, and relevant national standards including GB/T 10586–2006. It operates on a thermodynamic-hygroscopic balance (TMHM) control principle—integrating precision refrigeration, steam humidification, electric heating, and intelligent PID feedback regulation—to maintain highly stable, reproducible temperature and humidity conditions across large internal volumes (typically 1–10 m³). Unlike benchtop chambers, this walk-in design enables simultaneous evaluation of multiple drug batches under identical climatic stress conditions, supporting real-time monitoring of physical, chemical, and microbiological degradation pathways over extended durations (up to 72 months per ICH Q1A(R3)). Its robust architecture supports continuous operation at critical regulatory test conditions—including 25°C/60% RH (long-term), 30°C/65% RH (intermediate), and 40°C/75% RH (accelerated)—with thermal uniformity ≤ ±0.8°C and humidity uniformity ≤ ±3% RH across the working chamber.

Key Features

• Imported high-resolution color TFT touchscreen interface with intuitive navigation; supports seamless switching between English and Chinese languages.
• Up to 100 user-programmable test profiles, each configurable with multi-segment ramp/soak cycles, alarm thresholds, and data logging intervals.
• Advanced TMHM (Thermo-Moisture Hybrid Management) control algorithm ensuring dynamic compensation between heating, cooling, and humidification subsystems for minimal overshoot and drift.
• Optimized air distribution via dual centrifugal fans and vertical/horizontal baffle-guided airflow channels, achieving ≤ ±0.8°C spatial temperature uniformity and ≤ ±3% RH humidity uniformity per ISO 14644-3 and ASTM E2872–19.
• Comprehensive safety architecture: independent mechanical over-temperature cutoff, door interlock with emergency egress release, anti-lock mechanism for personnel safety inside the chamber, and leak-proof condensate management system.
• Real-time fault diagnostics displayed dynamically on screen with standardized error codes aligned to IEC 62443-2-4 for traceable root-cause analysis.

Sample Compatibility & Compliance

The LHH-Series accommodates diverse pharmaceutical sample formats—including blister packs, vials, ampoules, syringes, sachets, and bulk powder containers—on adjustable stainless-steel shelves or custom-configured racking systems. All internal materials comply with USP for polymeric components and ISO 10993-5 for cytotoxicity. The chamber meets essential requirements for GLP and GMP environments: full audit trail capability (via optional software), electronic signature support (21 CFR Part 11 compliant when paired with validated data acquisition software), and traceable calibration records. Certification documentation includes CE marking per EN 55014-1:2006 (EMC), EN 60335-1:2002+A2:2004+A11:2004+A12:2006 (safety), EN 61000-3-2:2006 (harmonic current emissions), and EN 60335-2-71:2003 (special requirements for environmental testing equipment).

Software & Data Management

The chamber integrates seamlessly with YiHeng’s optional StabilityTrack™ software suite (Windows-based, validated per GAMP5). This platform provides time-synchronized recording of temperature, relative humidity, door-open events, alarm logs, and system status—all timestamped with NTP-synchronized UTC time stamps. Data export formats include CSV, PDF reports (with digital signatures), and XML for LIMS integration. Audit trail functionality captures all user actions—including parameter modifications, profile uploads, and manual overrides—with immutable timestamps and operator IDs. Optional RS-485 Modbus RTU or Ethernet TCP/IP interfaces enable centralized monitoring within enterprise SCADA or MES platforms. Printer connectivity (via USB or network) supports immediate hardcopy generation of real-time trend curves and end-of-test summary reports.

Applications

• ICH-compliant long-term, intermediate, and accelerated stability studies for APIs and finished dosage forms.
• Photostability testing when integrated with optional UV/visible light modules (per ICH Q1B).
• Accelerated aging validation for packaging integrity and shelf-life prediction (ASTM F1980).
• Stability protocol development and qualification (IQ/OQ/PQ) for regulatory submissions (FDA, EMA, NMPA).
• Reference standard storage under controlled ambient conditions (20–25°C / 35–65% RH) as specified in USP .
• Supporting comparability protocols during manufacturing site transfers or process changes (ICH Q5E).

FAQ

What regulatory standards does the LHH-Series chamber comply with?

It complies with Chinese Pharmacopoeia (2020 Edition) Stability Testing Guidance, GB/T 10586–2006, ICH Q1 series, and EU safety directives EN 55014-1, EN 60335-1, EN 61000-3-2, and EN 60335-2-71.
Is the chamber suitable for 21 CFR Part 11 compliance?

Yes—when used with the validated StabilityTrack™ software package, it supports electronic signatures, audit trails, and role-based access control required under FDA 21 CFR Part 11.
Can the chamber be calibrated and qualified according to GMP requirements?

Yes—YiHeng provides IQ/OQ documentation templates, certified reference sensors (NIST-traceable), and on-site PQ support services through authorized partners.
What is the typical temperature and humidity range?

Standard operating range: 0–70°C and 20–98% RH; precise control achievable within ±0.3°C and ±2% RH at setpoints commonly used in stability protocols.
How is data integrity ensured during power interruption?

Internal non-volatile memory retains all active profiles and last 72 hours of logged data; external UPS integration is recommended for mission-critical deployments.