New DIY Design Increases CADR 15%

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. After I made my first DIY, a design magazine called me up to […]

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New DIY Design Increases CADR 15% – Supplemental data

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. Methods Results were identical to my earlier tests of the Original DIY, Blue […]

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Poor Man’s Fit Test

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. Which mask works best on your face? I was fortunate enough to visit […]

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DIYer Makes Cannon Quieter

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. Bill is an expat living in the hills northwest of Beijing, and he […]

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Are All DIYs the Same? Poor Results from 还我蓝天

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. When I did my first experiments, several people told me not to publish the data. “Don’t give it away for […]

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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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The Really Small Stuff

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. To test how effective the DIY filter is, I’ve been posting lots of data on 2.5 micron particles. But my […]

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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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Independent Confirmation

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. Independent Confirmation. I’ve always suspected that what I’ve “discovered” is so basic that people must’ve known about this before. Lo and […]

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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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