cannot measure the tiny molecule-sized particulate levels of VOCs (consumer air purifiers that rely on filters may also fail at this task) and there's no test kit included with the product because ...

With pollen counts soaring and air quality concerns on the rise, many turn to air purifiers for relief. But do they actually work? The short answer is yes, but take into account these considerations.

High-capacity filter-free ultrafine particle reduction technology is now being deployed in subways, schools, department ...