What is Particulate Matter (PM)?
When understanding Air Quality standards you’ll see acronyms such as PM2.5 being used. These are classifications of Particulate Matter (PM) accompanied by a number displayed, usually in subscript text, this number describes the size of particles, for example PM10 denotes particles with a diameter of 10 micrometres (10µm) or less [1], or PM1 with an even […]