more about air quality and are interested in collecting data about their environment.
By using handheld particel counter at home, you may learn a lot about air quality sensing.
There are a lot of things in our households which decrease the quality of air substances
and particles we do not have affordable tools to measure.
http://www.ionaircleaner.com/
http://www.homehealthywater.com/
http://www.skin-analyzer.com/

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