Test the bad gas in the air with particle counter

There are many kinds of bad gas in the air now because of the environment pollution.
Professional Particle counter to test the fine particulate matters in the air around us.
Find particulate matters easy go inside human body bad to health and breath.
So we can use the PM2.5 detector to know the air quality then solve it.


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reprinted: http://homehealthywater.com/health-care-knowledge/1789.html