2 year warranty
Replaceable filter
Can filter out 95% 3 µm particles during the first use
Lasts up to 40 hours
Effectively filter out 95% PM2.5
Awards
This is based on third-party test reports, calculated by Philips internal lab
With reference to the test conditions of the United States NIOSH and the Philips corporate standard, they are tested and certified by a third-party lab.
Pollen size ranges from 15 to 200 micrometres (E. Pacini, Encyclopaedia of Ecology 2008). N95 filter has minimum efficiency (>95%) at the most penetrating particle size (>0.1 <0.3 Micrometre)
Its recommended cumulative duration is calculated by Philips internal lab and the replacement time of the filter can be changed according to personal use habits.