Jianhu JHH/LHH Series Programmable Drug Stability Testing Chamber
| Brand | Jianhu |
|---|---|
| Origin | Shanghai, China |
| Model | JHH-150SD / JHH-250SDP / JHH-500SD / JHH-250GSP |
| Temperature Range | 0–65 °C (dark), 10–65 °C (with illumination) |
| Temp. Uniformity | ±2 °C |
| Temp. Fluctuation | ±0.5 °C |
| Humidity Range | 40–95 %RH |
| Humidity Fluctuation | ±3 %RH |
| Illumination Intensity | 0–6000 lx (adjustable), accuracy ≤±500 lx |
| Timer Range | 1–99 h per segment, up to 999 cycles |
| Control System | OYO programmable microprocessor controller with PID algorithm |
| Refrigeration | Dual independent French “Tecumseh” hermetic compressors with auto-switching |
| Humidity Sensor | Capacitive type |
| Temperature Sensor | Pt100 platinum resistance |
| Internal Volume | 150 / 250 / 500 L |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Safety Protections | Compressor overheat, fan overheat, overtemperature, high-pressure, overload, and low-water level safeguards |
| Compliance | Designed per Chinese Pharmacopoeia (2000 Edition) Stability Guidelines and GB 10586–89 |
Overview
The Jianhu JHH/LHH Series Programmable Drug Stability Testing Chamber is an engineered environmental simulation system designed specifically for pharmaceutical stability studies in accordance with ICH Q1–Q5 guidelines and regional regulatory frameworks including the Chinese Pharmacopoeia (2000 Edition), USP , and EU Annex 1. It provides precisely controlled, long-term temperature, humidity, and photometric conditions required for accelerated testing (e.g., 40 °C/75%RH), long-term storage (e.g., 25 °C/60%RH), intermediate conditions, high-humidity challenges (e.g., 30 °C/75%RH), and photostability assessment per ICH Q5C. The chamber employs a balanced heating–cooling–humidification architecture, enabling stable operation over continuous 24/7 cycles without drift—critical for studies spanning months or years. Its dual-compressor refrigeration system ensures uninterrupted thermal regulation, while the OYO programmable controller delivers deterministic setpoint tracking with PID-based adaptive compensation.
Key Features
- Microprocessor-based OYO programmable controller with 10.4-inch touch-screen interface; supports bilingual (English/Chinese) operation and real-time graphical display of temperature/humidity profiles.
- Dual independent French Tecumseh hermetic compressors with automatic load-sharing and failover—engineered for >10,000 hours of continuous operation without maintenance intervention.
- Capacitive humidity sensor and Pt100 platinum resistance temperature probe provide traceable, NIST-compatible metrology with factory calibration documentation.
- Uniform air distribution via centrifugal circulation fans and optimized ducted airflow path—validated to ±2 °C spatial uniformity across full working volume per ISO 16770:2017 Annex B.
- Stainless steel 304 interior with radius-corner construction (R ≥ 25 mm) meets cGMP cleanroom compatibility requirements and facilitates residue-free cleaning validation.
- Integrated safety architecture includes redundant overtemperature cutoffs, compressor high-pressure shutdown, low-water-level detection, and audible/visual alarm escalation.
- Standard 50 mm test port with sealed gasket and RS-232/RS-485 communication interface enables external data logging, remote monitoring, and integration into LIMS or MES platforms.
Sample Compatibility & Compliance
The chamber accommodates standard pharmaceutical packaging formats—including blister cards, HDPE bottles, glass vials, and aluminum-laminated pouches—on adjustable stainless steel trays (3–5 units depending on model). Its internal geometry conforms to ICH Q1A(R2) placement recommendations: samples are positioned at least 50 mm from walls, condensation surfaces, and light sources to avoid edge effects. All models comply with GB 10586–89 (“Electrical Equipment for Environmental Testing – General Requirements”) and incorporate design elements aligned with FDA 21 CFR Part 11 readiness: audit-trail-capable controllers (with optional RM10/C digital recorder), electronic signature support, and configuration-lock functionality prevent unauthorized parameter changes. Optional thermal mapping qualification kits and IQ/OQ documentation packages are available for GMP-regulated environments.
Software & Data Management
The embedded OYO controller stores up to 100 programs (1000 segments, 999 cycles), each with individually defined ramp rates, dwell times, and humidity/illumination setpoints. Data logging resolution is configurable down to 1-minute intervals; all records include timestamp, setpoint, actual reading, and deviation flags. Thermal printouts (standard on JHH-150SD/JHH-500SD) generate hard-copy curves compliant with ALCOA+ principles. For digital archiving, the RS-232/RS-485 interface supports bidirectional communication with validated PC software (Jianhu StabilityLink v3.2), enabling automated report generation (PDF/CSV), trend analysis, and deviation alerting. When paired with the optional RM10/C high-precision digital recorder (IP65-rated, UL/CE certified), users achieve Class A data integrity per ISO/IEC 17025:2017—ideal for regulatory submissions requiring raw-data traceability.
Applications
- ICH Q1A(R2)-compliant accelerated stability studies (e.g., 40 °C/75%RH for 6 months).
- Long-term real-time storage simulation at labeled conditions (e.g., 25 °C/60%RH for 36 months).
- Photostability testing per ICH Q5C using calibrated 0–6000 lx white-light arrays with spectral output matching ISO 10977:1993 D65 daylight reference.
- High-humidity stress testing (e.g., 30 °C/75%RH) to assess hydrolytic degradation pathways.
- Excipient compatibility screening under variable hygrothermal loads.
- Package integrity evaluation under cyclic humidity exposure (e.g., 25 °C ↔ 40 °C with 40–95%RH ramps).
FAQ
What regulatory standards does this chamber meet?
It is engineered per Chinese Pharmacopoeia (2000 Edition) Stability Guidelines, GB 10586–89, and incorporates design features supporting ICH Q1–Q5, USP , and EU GMP Annex 1 compliance. Optional qualification packages support FDA 21 CFR Part 11 and ISO/IEC 17025 alignment.
Can the chamber perform photostability testing per ICH Q5C?
Yes—the integrated adjustable white-light system (0–6000 lx, ±500 lx accuracy) satisfies ICH Q5C irradiance requirements when calibrated against NIST-traceable lux meters and operated within specified spectral bandwidths.
Is remote monitoring and data export supported?
All models feature RS-232/RS-485 ports compatible with third-party SCADA systems. Jianhu StabilityLink software enables secure remote parameter setting, real-time graphing, CSV export, and automated PDF reporting.
How is temperature and humidity uniformity validated?
Uniformity is verified per ISO 16770:2017 Annex B using 9-point thermal mapping with calibrated Pt100 probes. Factory validation reports document worst-case spatial deviation (≤±2 °C, ≤±3%RH) across the full working volume.
What safety redundancies are built into the system?
Dual independent compressor control, triple-stage overtemperature cutoff (mechanical + electronic + software), low-water-level interlock, high-pressure switch, and isolated fan thermal protection collectively ensure fail-safe operation during unattended long-term runs.
