Hazemeasurement systemThe integratingsphere hazemeasurement system, HMS1200 Series, is designed in accordance with ASTM D1003 specifications to characterize the brightness, specularity, diffusivity, total reflectance, and directionality of a variety of materials across the 0.41.1µmwavelength spectrum. The system features a 12in.diameter integrating sphere with an external sample mount that allows for diffuse transmittance measurements. The system is operated by the SC5000 Integrating Sphere System Control via a customersupplied computer. Windowsbased software provides a pulldownscreen user interface that monitors the transmittance and reflectance of the Koehler illuminator and commands the system power supply and SC5000 system control.