Air purification systems

Does anyone have experience with relatively small, free-standing air
cleaners (of the sort that Sears sells)? They are advertised as
"99.97% effective in removing most airborne particles, including
pollen, smoke, mold spores, and pet dander". Question: How effective
are they in trapping fine dust particles, like "book dust"?

Donald Farren
4009 Bradley Lane
Chevy Chase, MD 20815-5238
dfarren [at] concentric__net
301-951-9479
Fax: 301-951-3898


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                  Conservation DistList Instance 17:70
                   Distributed: Sunday, May 23, 2004
                       Message Id: cdl-17-70-024
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