Do Masks Only Last One Day?

How Long Do Air Pollution Masks Last?

2022-07-272017-09-30 by Thomas Talhelm

There’s good data showing that masks (including surgical masks) really can stop pollution and even have demonstrated physiological benefits. Masks work. But one place data is lacking is for air pollution mask lifespan. Just how long do air pollution masks really last? Really Just One Day? I frequently …

Is a 450RMB DIY Filter as Effective as a 13,900RMB IQ Air?

2021-08-262014-09-25 by Thomas Talhelm

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 …

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