Choosing which air purifier to buy can seem complicated. With thousands of air purifier models to choose from, how to choose? In this air purifier buying guide, we take you through the four steps on how to choose an air purifier. What’s the Best Air Purifier? The best air purifiers …
What is N95 Mask Used for? N95 respirators are an important part of healthcare personal protective equipment (PPE), filtering out over 95% of particles as small as 0.3 microns when properly fitted to the user’s face. They have been found to result in fewer viral infections among healthcare workers compared …
Air purifiers work best in a closed room environment, but this makes some people worry that closing windows starves us of oxygen. Worried about how long you can survive in an airtight room? Well, recent tests in a real apartment — with as many as seven people in a small …
There are many ionizer air purifiers available on the market today. These devices work by using charged ions to make airborne particles stick to surfaces, which helps the particles get captured more easily by filters. A big downside of ionizers is that they cause particles to stick inside our lungs! …
When the “airpocalypse” struck Beijing, I got out my credit card to give $1,000 to IQ Air. But the price just didn’t seem right. I soon learned that HEPA filters are what capture particulates (even in the expensive machines), and they were invented way back in the 1940s. So I made my …
Since mask fit-test machines cost $10,000, many people need a simpler, practical way to check that their mask is sealing properly on their face. This simple four-step “poor man’s fit test” will help people check the fit of their mask and find leaks. I was fortunate enough to visit 3M’s …
When I was coughing through Beijing’s airpocalypse and thinking about buying an air purifier, I wanted to know something first–do air purifiers really remove PM2.5? I wondered because I saw lots of air purifier tests on pollen, but pollen is generally 10 microns or larger, whereas I was really concerned …
Empirical data shows that air purifiers are great at cleaning air, but do they dry out the air and lead to other health problems? Do they make dry air even dryer, or can they be used as dehumidifiers to dry out the air? For me, dry air is mostly just …
Ever wondered which cities in India have the best air quality and AQI? The city with the best AQI and cleanest air might not be where you think. I analyzed the data from the World Health Organization’s database of annual particulate pollution (PM2.5) averages for 122 cities. Here’s what I found. …
If you can smell an odor while you’re wearing an N95 mask, does that mean the mask isn’t fitting well? Many people experience this when they notice they can still smell cigarette smoke, even though they’re wearing a mask. Thus, can we use smells as an indicator of getting a …
Be the first to know about air quality news, research, the latest clean air gadgets, and discounts. 🌎
