Can Activated Carbon Remove Formaldehyde?

“Formaldehyde” (甲醛) is a surprisingly common word in China. I say surprising because I’m from the US, where only scientists and high schoolers dissecting frogs tend to be familiar with the chemical. But it’s not because Chinese people are all nerds. At dinner with Chinese colleagues, my friend David once used the word “carbohydrate” (碳水化合物) […]

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Does adding a carbon layer reduce particulate effectiveness?

I recently published tests showing that carbon actually removes VOCs. But adding that carbon layer raises a question: adding carbon means the fan has to power through yet another layer of resistance. Does that make purifier less effective at removing particulates? Methods To test this question, I ran 10 room tests with the Cannon and 10 […]

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