Specification

10
Ozone
Blueair’s patented HEPASilent™ filter technology uses active ionization (particle charging) to cap-
ture and remove particles from indoor air. However, Blueair systems should not be associated with
dangerous indoor ozone that could be formed by ionization. In fact, already in 1999 Blueair units
were tested at Karolinska Institutet (Sweden) and shown to actually reduce ozone in a sealed room,
the concentration in the output air was lower than in the incoming. Since this report was published,
Blueair units have been continuosly tested to be made sure that they do not emit ozone.
Background
Ozone is a molecule composed of three atoms of oxygen (not to be confused with the two-atom-
oxygen molecule that we breathe to support life). Ozone from electronic air cleaners is created when
air pass through a corona field. Ozone can decrease lung function and cause health effects such as
chest pain, shortness of breath, throat irritation and aggravation or higher susceptibility to respiratory
health problems.
Learn more about ozone in air purification:
http://www.epa.gov/iaq/pubs/ozonegen.html
Standards and certifications
One of the most stringent testing for ozone safety is set by the U.S. Food and Drug Administration
(FDA) to a threshold of 0.050 ppm (parts per million). Certifications of air purifiers meeting this limit is
conducted by the California Air Resource Board (ARB) through tests outlined in the UL Standard 867
Section 37.1.2.
Testings and results
All Blueair units have been tested and certified by ARB for complying with the UL Standard 867 Sec-
tion 37.1.2 criteria of emitting less than 0.050 ppm o.
Certified units are listed on the ARB website:
http://www.arb.ca.gov/research/indoor/aircleaners/certified.htm
Marks