Ozone generator machines are popular tools to remove odors, pollutants, and viruses. But what does the science say about the effectiveness of ozone machines? The biggest downside of using an ozone generator is that ozone is harmful to humans! But hey, maybe ozone could be useful in an empty room? Scientists …
What are ionizer air purifiers and do they work? This is an important question because ionizer air purifiers are all over the place. For example, I was at a friend’s apartment in the US, and I saw his tower fan air purifier had an ionizer button on it: Ionizer air …
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 …
A whole range of technologies and solutions for COVID reduction in schools, offices, and homes have burst onto the market. But which ones work at reducing COVID-19 spread, and which ones don’t? The CDC has published a detailed article outlining their recommended ways to improve ventilation and reduce COVID exposure. …
When summer rolls around, enticing blue skies often draw people outside. Throw on top the fact that most cities in China have less PM2.5 pollution in the summer, what’s stopping us from heading outside? Ozone Pollution on Rise Across China Ozone has been on a steady increase across China in …
