HePu LHH-500SD Drug Stability Testing Chamber

Overview

The HePu LHH-500SD Drug Stability Testing Chamber is an engineered environmental simulation system designed explicitly for pharmaceutical stability studies in compliance with international regulatory frameworks—including ICH Q1A(R2), the Chinese Pharmacopoeia (2005 Edition), and GB 10586–2006. It operates on a balanced temperature and humidity control principle, utilizing simultaneous modulation of refrigeration, heating, and humidification subsystems to maintain precise, reproducible test conditions over extended durations. Unlike single-loop climate chambers, the LHH-500SD implements dual independent PID algorithms for temperature and relative humidity—ensuring minimal cross-coupling effects and high fidelity during critical protocols such as accelerated testing (40 °C ±2 °C / 75 %RH ±5 %RH), intermediate condition testing (30 °C ±2 °C / 65 %RH ±5 %RH), and long-term storage simulation (25 °C ±2 °C / 60 %RH ±5 %RH). Its structural integrity, thermal inertia management, and airflow homogeneity are validated per ISO 16770:2017 (Environmental testing — Guidance on stability chamber qualification).

Key Features

• 304 stainless steel inner chamber with fully radiused corners (R ≥15 mm) to eliminate microbial harborage points and support routine cleaning validation under GMP Annex 1.
• Imported hermetic scroll-type industrial compressor delivering stable cooling performance across full operating range without oil carryover or refrigerant migration issues.
• Capacitive humidity sensor calibrated traceably to NIST standards, with automatic drift compensation and condensation-resistant housing for sustained accuracy at high RH levels.
• Programmable touchscreen controller supporting up to 99-step cycles, real-time deviation alarms, and event-triggered data capture (e.g., door open, power interruption).
• Asymmetric dual-airflow ducting system generating laminar, low-turbulence circulation—validated via thermal mapping (ASTM E2297–22) to ensure ≤±0.8 °C spatial uniformity across entire working volume.
• Standard 25 mm diameter access port on left side wall, fitted with silicone gasket and blanking plug, compatible with external probes, purge lines, or inline gas analyzers.

Sample Compatibility & Compliance

The LHH-500SD accommodates standard ICH-compliant packaging configurations—including blister packs, HDPE bottles, aluminum tubes, and glass vials—without compromising environmental integrity. Its chamber volume (0.50 m³ net) supports up to 120 units of 100 mL amber glass vials arranged on three independently height-adjustable 304 stainless steel shelves (load capacity: 15 kg/shelf). All materials contacting the test environment comply with USP for plastic components and ISO 10993–5 for cytotoxicity. The system is prequalified for 21 CFR Part 11 readiness when paired with optional audit-trail-enabled software; full IQ/OQ documentation packages are available upon request. Validation support includes thermocouple mapping reports, humidity distribution studies, and recovery time assessments per WHO Technical Report Series No. 992 (Annex 10).

Software & Data Management

While the base unit features embedded touchscreen logic with local data logging (internal memory: 30 days @ 1-min intervals), optional Ethernet- or USB-connected PC software enables centralized monitoring of multiple chambers, automated report generation (PDF/CSV), and electronic signature workflows compliant with ALCOA+ principles. Raw sensor outputs—including Pt100 temperature readings and capacitance-based RH signals—are timestamped and stored with checksum verification. Optional add-ons include SNMP-based network alerting, SMS notification modules (with configurable threshold triggers), and integration-ready Modbus RTU/ASCII protocol support for MES or LIMS environments.

Applications

• ICH Q5C biologics stability assessment under real-time and accelerated conditions
• Photostability pre-screening (when integrated with optional UV-filtered light sources)
• Excipient compatibility studies under controlled hygrothermal stress
• Accelerated degradation kinetics modeling for small-molecule APIs
• Stability-indicating method development support via conditioned sample storage
• GMP-regulated retained sample storage per EU Annex 19 requirements

FAQ

Does the LHH-500SD meet ICH Q1A(R2) temperature and humidity tolerances for long-term testing?

Yes. It maintains ±2 °C and ±5 %RH tolerance bands at 25 °C/60 %RH and 30 °C/65 %RH through continuous feedback control and factory-calibrated sensor redundancy.
Can the chamber be qualified for use in FDA-inspected facilities?

Yes. Full qualification documentation—including URS, DQ/IQ/OQ templates, calibration certificates, and thermal/humidity mapping reports—is provided. Optional PQ support is available via certified third-party vendors.
Is remote monitoring supported out-of-the-box?

Remote status viewing requires optional Ethernet module and PC software license. Basic alarm notifications (e.g., temp excursion) can be enabled via SMS add-on.
What maintenance intervals are recommended for the humidity system?

The ultrasonic humidifier reservoir requires weekly deionized water replenishment and monthly citric acid descaling. The humidity sensor is verified annually against saturated salt standards.
Are spare parts and service support available internationally?

HePu maintains authorized service partners in Germany, Singapore, and Brazil. Critical spares—including compressors, controllers, and sensors—are stocked regionally with ≤72-hour dispatch SLA.