Laser particle counter show how serious PM2.5 pollution in car

When the door window is closed, is there much difference between the PM2.5 and the external environment?
How much PM2.5 can be dropped after opening the outer loop?
Laser particle counter is the best helper to tell you all the answers.
With the particle counter can check the PM2.5 and PM10 in the car. confirm the air quality.
Then we can sure to use the car air purifier or not or open the window or not.


The article is provide from [Lanjia Water Ionizer], please indicate the source address
reprinted: http://www.ionaircleaner.com/health_and_environment/2332.html