ARALAB FITOCLIMA 600 PLH-R and 1200 PLH-R Photostability Chambers for Pharmaceutical Stability Testing

Overview

The ARALAB FITOCLIMA 600 PLH-R and FITOCLIMA 1200 PLH-R are purpose-engineered photostability chambers designed explicitly for pharmaceutical stability testing under ICH Q1B Option 2 requirements. These chambers integrate precise, independent control of temperature, relative humidity, visible light, and near-ultraviolet (UV-A) irradiance within a single, validated environmental enclosure. Unlike generic climate chambers, the PLH-R series employs a dual-spectrum cold-light architecture—using high-efficiency LED arrays for visible light (26,000 Lux max) and calibrated UV-A emitters (30 W/m², 320–400 nm)—to replicate the spectral distribution and intensity profiles mandated by ICH guidelines. The system operates on a Couette-type air circulation principle: top-mounted EC variable-speed fans drive laminar, low-turbulence airflow through engineered ducts, ensuring uniform exposure across all sample positions while minimizing thermal load from lighting systems. All internal surfaces are constructed from electropolished AISI 304 stainless steel to prevent corrosion, adsorption, or outgassing—critical for GMP-compliant pharmaceutical environments.

Key Features

• ICH Q1B Option 2–compliant photostability platform with simultaneous, traceable control of temperature, RH, visible light, and near-UV irradiance
• ClimaPlus© controller with 7″ capacitive touchscreen, real-time graphical display, and audit-trail-capable data logging (ISO/IEC 17025-aligned metadata tagging)
• Non-volatile flash memory stores ≥1 year of continuous operational data; USB export produces tamper-evident, read-only CSV files compliant with FDA 21 CFR Part 11 Annex 11 requirements
• Dual-stage filtration (pre-filter + activated carbon) and self-cleaning cycle (steam-assisted condensate purge) maintain chamber hygiene without manual intervention
• Independent safety circuitry: dual redundant temperature sensors, adjustable high/low limits, automatic power cutoff upon thermal runaway, and door-open timeout alarm with latching status
• Modular lighting configuration: one shelf dedicated to visible light (26,000 Lux), one to near-UV (30 W/m²); each shelf provides 0.14 m² of uniformly illuminated area
• Remote operation and monitoring via encrypted Wi-Fi/Ethernet connection; integrated VPN module enables secure off-site access from desktop, tablet, or smartphone

Sample Compatibility & Compliance

The FITOCLIMA PLH-R series accommodates standard pharmaceutical packaging formats—including blister packs, HDPE bottles, glass vials, and aluminum tubes—on adjustable stainless-steel shelves. Chamber geometry (max width ≤81 cm) ensures compatibility with standard laboratory doorways and freight elevators. Internal volume (600 L or 1200 L) supports ICH-recommended sample spacing (≥2.5 cm between units) and allows for placement of reference standards (e.g., quinine sulfate solutions) alongside test articles. Validation support includes eight 80 mm diameter access ports for probe insertion, thermocouple feedthroughs, and photometric sensor calibration. The system conforms to ISO 14644-1 Class 8 cleanroom-compatible construction, meets EN 61000-6-3 EMC immunity standards, and is CE-marked per Machinery Directive 2006/42/EC. Optional IQ/OQ documentation packages are available for GxP-regulated facilities requiring GLP or GDP audit readiness.

Software & Data Management

The ClimaPlus© software architecture embeds ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) into every data transaction. Each logged parameter—temperature, RH, light intensity (measured via integrated photodiode array), and UV irradiance—is time-stamped with microsecond precision and associated with operator ID, program name, and step number. Alarm events trigger automatic screenshot capture and contextual diagnostic logs (e.g., fan RPM deviation, heater duty cycle anomaly). Data export supports both batch download (via USB) and scheduled automated transfer to network-attached storage (NAS) or LIMS via FTPS/SFTP. The controller’s built-in web server enables live dashboard viewing without proprietary client software—compatible with Chrome, Edge, and Safari browsers. Audit trail reports include user login/logout records, parameter modification history, and firmware update logs—all retained indefinitely in immutable memory.

Applications

• ICH Q1B photostability studies for active pharmaceutical ingredients (APIs) and finished dosage forms
• Forced degradation testing under controlled light stress (Option 1 & Option 2 protocols)
• Accelerated stability programs per ICH Q1A(R3), including long-term (25 °C/60 % RH) and intermediate (30 °C/65 % RH) conditions
• Light-induced oxidation and hydrolysis pathway characterization in biologics and small molecules
• Reference standard qualification and photostability method validation per USP and Ph. Eur. 2.2.74
• Environmental simulation for packaging integrity assessment under cyclic light/dark and humidity profiles

FAQ

Does the FITOCLIMA PLH-R comply with ICH Q1B Option 2 for near-UV irradiation?
Yes—the system delivers calibrated, spectrally defined near-UV output (30 W/m², 320–400 nm) with traceable NIST-traceable photodiode sensors and integrated real-time irradiance feedback control.
Can humidity be maintained accurately while visible light is active?
Yes—ultrasonic humidification operates independently of heating/cooling cycles and introduces negligible thermal load (<0.1 °C perturbation), enabling stable RH control even at maximum illumination.
Is the data logger compliant with 21 CFR Part 11?
Yes—electronic records include digital signatures, role-based access control, immutable audit trails, and electronic record export in FDA-accepted formats.
What validation support is provided for GMP environments?
ARALAB supplies factory-verified IQ/OQ protocols, as-built schematics, calibration certificates for all critical sensors, and a complete traceability matrix linking hardware components to regulatory requirements.
How is temperature uniformity verified across the working volume?
Uniformity mapping is performed per ISO 16770 using 15-point sensor arrays during qualification; results are documented in the chamber’s URS-compliant validation report.