Specification

13
Particle efficiency
The HEPASilent™ filter technology captures 99.97% of particles that are 0.1 micron or larger in size.
Background
The efficiency of an air purifier indicates how much of pollutants are removed from the air when the air
passes through the system once. Note that efficiency does not show the volume of filtered air. Only in
combination with high airflow is high efficiency an essential component of good air purification.
Testings and results
In 2000, a test on the HEPASilent™ filtration technology was conducted in Sweden at Camfil Com-
ponent AB. The test showed the efficiency of 99.97% in capturing particles down to 0.1 microns in
size. The test was performed on a Blueair 501 unit fitted with particle filter, placed in a space of 3.6 m
2
(32 sq. ft.). Airflow was 150 m
3
/h (88 cfm). Elapsed testing time was 120 s.
The high efficiency results from Camfil Component AB has been confirmed by other laboratories
tested elsewhere such as in the U.S in 2010 at LMS Technologies, Inc. This test was performed on
a Blueair 650E unit fitted with particle filter.
99
99,1
99,2
99,3
99,4
99,5
99,6
99,7
99,8
99,9
100
0,1 0,12 0,15 0,2 0,25 0,35 0,45 0,6 0,75 1 1,5
Efficiency (%)
Particle size (µm)
Particle efficiency, Camfil, 2000
99,9
99,91
99,92
99,93
99,94
99,95
99,96
99,97
99,98
99,99
100
0,3 0,5 0,7 1 2 3 5
Efficiency (%)
Particle size (µm)
Particle efficiency, LMS Technologies Inc., 2010