To appreciate the efficacy of an air purifier, it is best to witness it in operation in a test. The AirDoctor test involves filling a confined chamber with thick red smoke. After that, the purifier is switched on, and how long it takes to start cleansing the chamber of its contents is monitored. Due to the visibility of the smoke in the chamber, all the changes in the chamber may be observed during the process of testing. Maintaining Indoor Air Quality is very important in en