The other day, someone on Quora asked whether ionizer air purifiers work and actually purify the air. This is an important question because ionizers are all over the place. Ionizer air purifiers are often marketed with a variety of names. These names include “ion air purifiers”, “negative ion air purifiers”, … Read more
With such similar-sounding names, it can be confusing to understand the difference between N95 and KN95 masks. What are KN95 masks, and are they the same as N95 masks? This handy chart explains the differences between N95 and KN95 masks (and all characteristics that are the same). N95 vs. KN95 … Read more
Air purifiers have become incredibly popular for those looking to protect themselves against COVID-19 and other viruses. That’s not surprising. Data shows that air purifiers can filter out COVID-19. In fact, the EPA now suggests portable air purifiers be used to improve ventilation to protect against COVID-19: However, when looking … Read more
It turns out, the difference between N95 and KF94 masks is minor for the factors that most users care about. KF94 is the “Korean filter” standard similar to the US N95 mask rating. Difference Between N95 and KF94 Masks: Charted Out They look similar, and they filter a nearly identical … Read more
Does a wet mask still work? If your mask is slightly wet, how does this wetness and humidity affect it’s performance? Fortunately, scientists have tested the effectiveness of wet masks. Researchers tested the performance of new and “wet” masks. They asked 22 people to wear either a DIY cloth mask, … Read more
The latest research on the health effects of air pollution have discovered a surprising finding: low levels of air pollution are actually more harmful than higher levels. This data has potentially important implications for people living in relatively “clean” cities like New York and London. My Intuition About Air Pollution’s … Read more
Can activated carbon filters remove formaldehyde and VOCs? Earlier tests from Smart Air found that carbon can reduce VOCs from cigarette smoke. But formaldehyde and VOCs in general are particular concern for many people. We put activated carbon filters to the test by ordering formaldehyde straight from the factory and … Read more
Several people have asked me if they can use one purifier to clean their entire apartment or house. For example, can I put a large purifier in the living room and avoid having to put purifiers in each room? The benefits would be great. This setup would be easier, cheaper, … Read more
The coronavirus has made millions around the world regularly wear masks to reduce the spread of the virus. It is clear, masks help mitigate virus spread. But widespread mask wearing may be having another unintended benefit: lowering blood pressure for millions. With mask wearing to prevent coronavirus spread, people are … Read more
The Xiaomi Mi 2 air purifier – a good cheap and effective air purifier? Ever since I coughed through a Beijing airpocalypse, I’ve been saying clean air doesn’t need to cost an arm and a leg. I even set up Smart Air to provide low-cost purifiers to people around the … Read more
