Is a 450RMB DIY filter as effective as a 13,900RMB IQ Air?

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in this site default language. You may click one of the links to switch the site language to another available language. When the “airpocalypse” struck Beijing, I got out my credit card to give $1,000 […]

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Finally! Directly comparable tests: DIY versus Blue Air

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. I’ve wanted to know for a long time whether the DIY filter is as effective as the Ferrari filters. In […]

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Are Particle Counters and Government Machines the Same?

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. My particle counter is a beast–I’ve loved it. But I’ve always wondered how the counts of laser particle counters like […]

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More Comparisons

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. Dr. Saint Cyr recently pointed me to great tests of air purifiers from the Shanghai Consumer Protection Bureau: The reason […]

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DIY Compared to Expensive Filters

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. UPDATE: I now have directly comparable data with the DIY Filter, Blue Air, and Philips: Direct comparison tests. In earlier posts […]

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DIY HEPA Filter over Time

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. Does the DIY purifier work? Test results (1, 2) give a conclusive answer, but this series of pictures gives a […]

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