The Expert: Many air purifiers are completely useless
An article in Dagens PS interviewed Anders Hedström, who has worked with air purification for most of his working life. Most recently as global head of air quality at Swedish Camfil AB, which is a world leader in filters for air purification. Today, he is an advisor to the WHO's Collaboration Center at Queensland University of Technology and works, among other things, to develop a new standard for air purification, and also as a consultant to the aviation industry regarding air purification.He believes that many air purifiers are largely ineffective. It is required, among other things, that