25/11/2024 17:48, https://ecohouse-eg.com/465681

News

28/03/12

Dust is normally quite harmless

Dust is normally quite harmless and leaves nothing more than a fine coat on our polished surfaces. However, there is a sinister side to dust as dust can be comprised of any substance, which includes those harmful to humans. Dust is made up of minute particles from the size of a micron or two (a thousand of which make a millimetre) to much larger particles. The larger, weightier particles often settle quickly but smaller particles can float indefinitely in the air.

Dust quite harmless coat surfaces substance harmful humans




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