Honeywell F52F manual HOW Electronic AIR Cleaning Works, Word about, Particle size, Postage

HOW ELECTRONIC AIR CLEANING WORKS

A word about	The particles removed by the electronic air
particle size	cleaner tend to be very small—less than ten
	microns. But what is a 10 micron particle? The
	eye of an average sized sewing needle has a
	diameter of about 750 microns, and the dot in
	the “i” in the word micron is about 400 microns.
	Generally, particles smaller than ten microns
	can be seen only with a microscope, except in
	very large concentrations such as a puff of
	smoke. Your electronic air cleaner can remove
	even smaller particles that can be seen only
	with an electron microscope.
	Although particles one micron and smaller
	make up only about 20 percent of the total
	weight of particles in unfiltered air, they account
	for more than 99 percent of the numbers of
	particles.
	Because they are so tiny, these particles tend to
	remain suspended in the air unless they collide
	with a solid surface. Then they attach by
	molecular adhesion and stick like glue, staining
	walls and furniture and coating your air
	conditioning coils. And, of course, some of
	these particles can cause allergic reactions or
	simply make the environment less pleasant.
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		25,400
		Postage
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		M6031

15 69-0419—2