Fast reduction of odor and gaseous pollutants is best achieved by SmokeStop™ filters. Blueair
SmokeStop™ filters are particle filters with a separate compartment of oxygen activated carbon granules plus compressed sheet carbon. Together, this system provides a highly efficient filter medium to remove gases, odours, VOCs (volatile organic compounds) and smoke.
The exposure to gaseous pollutants has increased with the usage of chemical-based household
and personal cleaners, indoor pesticides and aerosol. Also plastics, binders and glues in synthetic
building materials, carpets and furnishing are off gassing. The irritating gases may be factors in a host
of illness, from respiratory disease to chemical sensitivity. Odour causes negative effects as well as
unpleasant feelings. Strong odour has also shown to have significant negative effect on asthma.
Shanghai Institute of Measurement and Testing Technology tests air purifiers for their removal rate of
formaldehyde and VOCs in accordance with GB/T 18801-2001 and GB/T 18883-2002.
Kitasato Research Center of Environmental Sciences (Japan) tests air purifiers for their filtration efficiency
of malodorous substances. Tests for tobacco smoke was tested in accordance with the
standard JEM 1467.
Test results from both mentioned laboratories prove the very high efficiency of Blueair units
using SmokeStop™ filters in reducing gases and odors.
In 2009, the Shanghai Insitute of Measurement and Testing Technology tested Blueair 503 in removing
VOC. Nature attenuates refers to the natural reduction of VOC in the air without an air purifer present.
Testings were conducted in a 30m3 room (temperature 19-21 ̊ C, humidity 45-55% RH). Initial concentration
of VOC was 4.2 mg/m3. Unit was tested on full speed.
VOC Removal Rate using unit 503
Time Natural decline with SmokeStop™ filter
2 hours 7% 96%
3 hours 11% 98%
In 2010, deodorization test for tobacco smoke was conducted by the Kitasato Research Center
of Environmental Sciences (Japan) in a 1m3 unventilated chamber. The units were operated on full
Deodorization Test of smoke after 30 min
SmokeStop™ filter Particle filter
650E 100% 53.0%
450E 100% 42.3%
In 2009, the Shanghai Insitute of Measurement and Testing Technology conducted tests on Blueair
503 in removing formaldhyde from the air. Nature attenuates refers to the natural reduction of formaldehyde in the air without an air purifer present.
Tests were conducted in a 30m3 room (temperature 19-21 ̊ C, humidity 45-55% RH). Initial concentration
of formaldehyde was 1.5 mg/m3. Unit was tested on full speed.
Formaldedyde Removal Rate using unit 503
Time Nature decline with SmokeStop™ filter
2 hours 10% 94%
3 hours 13% 96%
In 2010, a deodorization performance test was conducted by the Kitasato Research Center of Environmental
Sciences (Japan). The table shows how long it takes (minutes) to eliminate each tested substance to 99% if operating the Blueair 650E on full speed in an unventilated room.
Small room (23m3) Living room (78m3)
Particle filter SmokeStop™filter Particle filter SmokeStop™filter
Ammonia 191 min 22 min 635 min 75 min
Hydrogen Sulfide 1944 min 16 min 6480 min 53 min
Methyl Mercaptan N/A 18 min N/A 61 min
Trimetylamine 44 min 26 min 147 min 85 min
Formaldehyde 54 min 38 min 180 min 127 min