For Aerobiological Applications Air Media article published Summer 2002. by W.J. Kowalski, PE, Ph.D. and William Bahnfleth, PE, Ph.D., The Pennsyvania State University Technical input also provided by Charlie Seyffer, Camfil and Keith Chesson of Airguard. Recent concerns about bioterrorism and existing concerns about indoor air quality have raised interest in technologies that can remove … Continue reading MERV Filter Models