Fison Aerosol Photometer enables aerosol concentration measurement and filter integrity testing across controlled environments. It offers a dynamic range of up to 600 µg/L and an automatic measurement range from 0.0001% to 100.0%. The system delivers 1% reading sensitivity and 0.5% reading repetitiveness for consistent results. Equipped with adjustable flow settings, high-sensitivity detection, and data logging capability, it supports applications including HEPA filter testing, cleanroom validation, containment verification, and air quality monitoring. The clear interface enables efficient operation and real-time measurement tracking.