The E&E Solutions made Portable Particulate Monitors, PPM-01, uses laser light scattering principle-based sensors to give accurate and reliable values of particulate matter. PPM-01 is a hand-held air quality monitor that can monitor particulate matter in indoor/ambient air. Particulate matter measurement is taken in three ranges, PM1, PM2.5, and PM10. The PDM-01 has a very easy user interface and comes with the inbuilt data logger. Rechargeable batteries provide continuous operation for long hours.