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Is the Dyson hand dryer more sanitary than paper towels?
If you are referring to the dyson airblade, then it appears it may actually be more sanitary than paper towels. The airblade uses a HEPA filtration system, so it only blows clean air, and you dont have to touch anything, like the paper towel dispenser.
What is the difference between screen filters and coffee filters?
Screen filters are generally made of a (metal) mesh of some sort, their filtration grade is course, collecting large particles, typically a few millimetres (sometime perhaps 1/10th of a mm) in size or greater. Whilst paper filters are normally based on paper fibres combined together to form a very fine filter material, capable of filtering particles that are sub-micron (less than a 1/1000th of a mm) in size. Most HEPA filters for example are paper-based filters.
Large airborne particles are filtered by what?
There are several options:Particulate filters (bag houses, HEPA, etc.)Electrostatic precipitatorsScrubbersCyclonesImpingement systemsChemical absorption
How are sscreen filters and filter papers Alike?
Screen filters and paper filters are alike
