Aralab Walk-in Temperature and Humidity Controlled Chamber

Overview

The Aralab Walk-in Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for long-term stability studies of pharmaceutical products, biological materials, and medical devices under strictly regulated climatic conditions. Based on the principles of forced-air convection, precision PID-controlled refrigeration/heating circuits, and dual-stage humidification/dehumidification systems, this chamber maintains highly uniform temperature and humidity profiles across its entire internal volume—critical for ICH-compliant accelerated and real-time stability testing (ICH Q1A–Q1E). Its walk-in configuration enables full-scale storage of shelf-ready packaging, palletized batches, and multi-tiered stability racks, supporting continuous monitoring per FDA guidance on drug product storage and qualification of storage environments.

Key Features

• Walk-in architecture with insulated double-wall construction (polyurethane foam, ≥120 mm thickness) and electrostatically coated steel interior for corrosion resistance and ease of cleaning.
• Microprocessor-based controller with real-time display of setpoint, actual values, deviation alarms, and operational status—calibration traceable to NIST or PTB standards.
• Independent humidity control via steam generator (for humidification) and refrigerated coil + desiccant wheel (for dehumidification), ensuring stable RH performance even at low-temperature setpoints.
• Temperature uniformity ≤ ±0.8 °C (at 25 °C/60 %RH, measured at 9 locations per ISO 14644-3), validated per IQ/OQ/PQ protocols aligned with ASTM E2582 and ISO 16774.
• Redundant safety systems including high-temperature cutoff, over-humidity shutoff, door-open alarm, and independent mechanical thermostat backup.
• Optional integrated data logging with 21 CFR Part 11–compliant electronic signatures, audit trail, and user role-based access control (admin/operator/viewer).

Sample Compatibility & Compliance

The chamber accommodates diverse sample formats—including primary and secondary packaging, clinical trial supplies, reference standards, and active pharmaceutical ingredients (APIs)—without compromising environmental integrity. Internal dimensions support standard stability shelving (e.g., 600 × 600 mm trays) and modular rack configurations. All materials in contact with the test environment comply with USP for plastic components and ISO 10993-5 for cytotoxicity. System validation documentation meets EU GMP Annex 15 requirements and supports regulatory submissions under FDA, EMA, PMDA, and Health Canada review pathways. Environmental profiles are fully configurable to replicate ICH Zones I–IV (e.g., 25 °C/60 %RH, 30 °C/65 %RH, 40 °C/75 %RH) with ramp-and-soak capability.

Software & Data Management

The optional Aralab ControlSuite™ software provides remote monitoring, automated report generation (PDF/CSV), and trend analysis of temperature/humidity excursions. Data archives are stored in encrypted SQLite databases with immutable timestamps and operator identification. Audit trail functionality records all parameter changes, calibration events, alarm acknowledgments, and user logins—fully compliant with FDA 21 CFR Part 11 Subpart C for electronic records and signatures. Integration with LIMS and MES platforms is supported via OPC UA and Modbus TCP protocols, enabling seamless alignment with enterprise quality management systems (QMS) operating under ISO 9001 and ISO 13485 frameworks.

Applications

• ICH Q1A(R3)–Q1E stability testing for registration dossiers and post-approval commitments.
• Real-time and accelerated shelf-life determination of solid oral dosage forms, injectables, and biologics.
• Storage condition qualification per USP and Ph. Eur. 5.1.3 for controlled room temperature (CRT) and intermediate storage.
• GMP warehouse environmental mapping and ongoing monitoring per EU Annex 15 and WHO Technical Report Series No. 992.
• Stability-indicating method development support through controlled stress exposure (e.g., cyclic humidity variation, thermal shock simulation).

FAQ

What validation documentation is provided with the chamber?
Factory-issued IQ/OQ protocols, as-built drawings, material certifications (e.g., EN 10204 3.1), and a Certificate of Conformance traceable to international metrology standards.
Can the chamber be qualified for 21 CFR Part 11 compliance?
Yes—when equipped with ControlSuite™ software and configured with role-based authentication, electronic signatures, and full audit trail functionality.
Is remote monitoring and alarm notification available?
Standard Ethernet interface supports SNMP traps, email alerts, and integration with building management systems (BMS) via Modbus TCP.
What is the recommended preventive maintenance schedule?
Quarterly verification of sensor accuracy, semi-annual refrigerant pressure check, and annual recalibration of humidity sensors using saturated salt solutions per ISO 4677.
Does the chamber meet cleanroom-compatible installation requirements?
Yes—the unit can be installed in ISO Class 7/8 environments with optional HEPA-filtered recirculation air and non-shedding interior finishes compliant with ISO 14644-1.