Plants Have No Detectable Air Purification Effect

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. Despite the popular conception that plants are purifiers, plants have detectable effect on […]

Read More

Winter (Air) is Coming

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. Another year, another Beijing winter. As winter arrives to Beijing, I got to […]

Read More

Shanghai Test: Is indoor air better than outdoor 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 I got my very first particle counter, I tested sites around Beijing […]

Read More

Is Air Pollution a Problem in Mongolia?

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. Air pollution or grasslands – which is more likely to come to mind […]

Read More

What time of day is PM 2.5 the lowest?

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. My intuition has always been that air pollution is lowest at night because […]

Read More

How Big of a Room Can the Cannon Clean?

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 tested every fan in China I could find with a flat […]

Read More

Does Chinese New Year Affect Inside 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 posted data before showing that outdoor air quality is strongly correlated with indoor particle counts (r = .71), but Chinese New […]

Read More

How Safe is Indoor 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 recently did some research on whether indoor air is as bad as outdoor air. Before that, I had a conversation […]

Read More

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 […]

Read More

Purifier Tests

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. How do I know if a DIY purifier works? I think you can break this down into two questions: Is […]

Read More