Suspended particles in the air are dust. If the content of these suspended particles in the air is high, it will cause air pollution. Various substances contained in these dust particles will affect human health. Dust particles are usually classified into Total Suspended Particulates (TSP), Inhalable Particulate Matter (PM10), and Fine Particulate Matter (PM2.5). Below is an introduction to the differences and relationships between these three types of particles.

The main difference between Total Suspended Particulates (TSP), Inhalable Particulate Matter (PM10), and Fine Particulate Matter (PM2.5) is the particle diameter. TSP Total Suspended Particulates refers to particles with a diameter less than or equal to 100 micrometers, PM10 refers to particles with an aerodynamic diameter less than or equal to 10 micrometers, and PM2.5 refers to particles with an aerodynamic diameter less than or equal to 2.5 micrometers. Both PM2.5 and PM10 particles are inhalable by the human body because these particles contain large amounts of impurities, many of which are toxic substances that can cause harm to the human body.

TSP, PM10, and PM2.5 have a hierarchical inclusion relationship; that is, PM10 is a part of TSP, and PM2.5 is a part of PM10. Research results show that the weight ratio of PM10/TSP is 60%—80%, while the weight ratio of PM2.5/PM10 is 50%—70%. If you need to detect the concentration of PM2.5 and PM10 in the air, you can do so through a dust sensor.

Application areas for Luftmy PM2.5 sensors: air purifiers, air conditioners with purification functions, PM2.5 detectors, range hoods, smoke alarms, fresh air systems, specialized PM2.5 sensors, air detectors, etc.