Prevent air pollution in winter with particle counter

PM2.5 will become very higher because of the Winter heating problem.
The pollution of Particulates Will affect the cardiovascular, PM2.5 will be inhaled in the lung,
in the process of the lung is equivalent to a filter. so the lung will be sick or die.
Particle counter is the best machine to check these kind of PM2.5.
It is use the laser sensor we always called it in laser particle counter too.