Study Finds Ionizers Increase Air Pollution

A peer-reviewed study from the University of Texas finds that ionizers increase air pollution, creating formaldehyde, ozone, and particulate. This data contrasts sharply with claims from air purifier companies that market ionizers as magical machines. One company in China claims that their machine’s negative ions “remove PM2.5 particulate pollution and … Read more

Half of Masks Failed N95 Tests and are not Reliable

Half of Chinese N95 Masks Fail Quality Checks

Tests of masks marketed as N95 from 21 manufacturers show that half of Chinese N95 masks fail quality tests–with some masks filtering no better than a cotton cloth. These tests come at a time that many countries around the world are scrambling for masks and other PPE.   Factories Spring … Read more

Sanitizing Masks With Alcohol Degrades Performance

With mask shortages during the coronavirus outbreak, some doctors are sanitizing masks with alcohol so they can re-use them. But this raises questions about whether alcohol actually works and whether it degrades the masks.   Does Alcohol Kill Viruses? The research on alcohol is clear. Alcohol kills viruses. Technically, viruses aren’t … Read more

DIY Cannon: Better, Faster, Stronger

Ever since I started my DIY filter experiments, I’ve been wondering whether I could create a super DIY by using a stronger fan. In the past three months, my collaborator Anna has helped me test a half dozen different fans. She now has a home full of fans:     … Read more

DIY Purifier Tests

How do I know if a DIY purifier works? I think you can break this down into two questions: Is the air coming out of the DIY purifier clean? The test results are as clear as can be. The DIY purifier shoots out very clean air. But is that enough to actually … Read more

How to Make a DIY Air Purifier

How can we make a homemade DIY air purifier?  Air purifiers can be extremely expensive.  But they don’t need to be. After researching how different air filters work, I concluded that a HEPA filter is all that’s needed to make an effective air purifier. Given that most air purifiers sell … Read more

Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.