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 Tuesday September 7, 2010
Allergy-Related Equipment & Supplies
Home Health Care Equipment & SuppliesAllergy Supply Company 11994 Star Court Herndon, VA 20171 Toll-Free: 800-323-6744 D.C. Metro: 703-391-2011 Fax: 703-391-2014 Fax Orders/Rx: 800-681-5454  . . |
 Filtering methods Question: I would like to know the difference between systems that use HEPA filters and other methods, such as negative ion systems. Answer: HEPA filters are made from densely wound glass fibers that trap 99.97% of all particles as small as .3 microns. Negative ion generators are usually not recommended for people with asthma because they produce ozone a respiratory irritant.
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