But PM2.5 detector can check how many bad air in the air.
With particle counter you can not only know the quanity also the weight for paticulates.
So some company who sell air purifer use handheld particle counter to demo features.
www.homehealthywater.com
www.skin-analyzer.com
www.ionaircleaner.com
The article is provide from [Lanjia Water Ionizer], please indicate the source address
reprinted: http://homehealthywater.com/health-care-knowledge/1766.html
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