Perapong Perapong is a director of Air Pollution and Health Effect Research Center and a professor at the Department of Mechanical and Mechatronics Engineering, Prince of Songkla University. His research focus centers around his background in aerosol mechanics, fluid dynamics and heat transfer. Recently, he and his colleagues are interesting in air pollution from open biomass burning, which is an important issue in Southeast Asia. He has studied sources of fine (PM2.5) and ultrafine particles (PM0.1) in atmosphere and found significant contribution from biomass burning, local and transboundary. He is also working on PM sensor development and calibration. The current paper is one of his recent works focusing on calibration of low-cost PM2.5 sensors. He has co-authors 68 international publications.