How was air pollution in China’s major cities in 2022? Fortunately, air pollution in most cities improved in 2022 over 2021, but a few cities lagged behind. Let’s take a closer look at how air quality fared in China’s major cities. A Quick Glance Air pollution in 16 major Chinese …
Blueair air purifiers such as the Blueair Blue Pure 211 and 411 models are some of the most popular air purifiers on the market. Yet there is confusion about whether Blueair air purifiers use ionizers and produce ozone. In some sections of their website, Blueair avoids answering the question directly, …
Blueair states their air purifiers use HEPASilent technology. They avoid any link to ionizers by claiming that it involves an ‘ion chamber’ that doesn’t emit ions to the room or produce ozone. However, we took apart a Blueair 203 purifier to take a look at this ‘ion chamber’. It turns …
