Photostability Chambers

• Ideal for applications such as forced degradation studies
• "Automatic" mode option turns lights off at the end of a programmed exposure or timed test
• "Manual" mode allows a flexible test time duration and makes validating the chambers easy
• Dimmable lamps (230V models) allow testing at specific light intensity levels
• Programmable alarms notify the user when aging lamps should be replaced
• Specular aluminum reflective surfaces provide uniform UVA & VIS light reflection and maintain proper SPD (spectral power distribution)
• Independent control of near UV and cool white VIS lamps are provided to eliminate overexposure for confirmatory tests and provide flexibility for forced degradation studies
• Precise temperature control is provided through use of a PID controller
• Humidity controlled units (Models 6545-1, 6545-2) isolate the effects of hydration during photostability testing
• Strategic lamp spacing provides enhanced light uniformity.  Overhead lighting results in a large illumination area for maximized direct lighting
• Door safety switch turns lights off when the door is opened and lockable door prevents additional disturbance of in-process tests

Photostability Chambers were specifically designed to perform near UV and visual light testing with fluorescent lamps per ICH Q1B Guidelines, Option 2. These benchtop units give the user convenient control with an easy-to-use color touch-screen interface to change light and temperature conditions.  Lights automatically shut off after a specified exposure level or time duration. Uniform light distribution and high intensity levels allow quick response for forced degradation testing and confirmatory studies. Precise humidity control (Models 6545-1, 6545-2) is achieved through ultrasonic injection and mechanical refrigeration methods. Two light detectors (one VIS and one UVA) with an integral radiometer are standard and provide precise and accurate light intensity measurements. Light detectors are both cosine corrected and calibrated to NIST traceable standards.