Effect PM2.5 and Particle counter on air quality

Particle counter is the best counter to check the fine particulate matters in the air.
Although the fine particles are only a few of the components of the earth's atmosphere,
it has important influence on air quality and visibility.

With the laser particle counter we can know the PM2.5 and PM10 result.
Also you can know the matters under 0.3μm and 2.5μm which is harm human body too.