Diffusion: Pretty Good particles measuring below 0.1 micron get bounced about randomly and so are slowed by their interactions with atmospheric atoms and molecules. They inevitably drift or get bounced right into a filter fiber, whereupon (yet again) they adhere inside a method termed diffusion. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น Besides a HEPA waiting for link from Social Network Posts (20)