Learned a lot. The topics were well explained. The quizzes helped me in further clarifying what I have learned. Also there are discussion forums where you can discuss and learn a lot
Received my nice certificates today. With this awareness, I bought a SHARP Plasmacluster Ion Air Purifier for my room. I also bought a formaldehyde & TVOC meter and with this meter identified some indoor air quality problem inside my car (petrol leaking increase the TVOC reading which need to send for car repair), and i also tested a CO detector for car exhaust. Now my confusion is on the ozone generation of from the Sharp Plasmacluster, whether is it dangerous to health, which i'm not sure because I don't have the air ozone meter. Thanks a lot.
