Transparency
A percentage without context says little. That's why we record here where statements come from, what a study actually shows, and where the limits of the evidence lie.
These sources cover air quality and exposure. They don't automatically prove how any specific product performs.
The RIVM defines ultrafine particles as particles smaller than 0.1 micrometre. Research around Schiphol found that short-term higher concentrations were linked to more respiratory complaints and medication use among children, especially those who already had respiratory complaints. The RIVM stresses this is not proof that long-term exposure causes respiratory disease.
View the original sourceAccording to Milieu Centraal, household wood burning accounts for roughly 23% of the Netherlands' PM2.5 fine-dust emissions. That figure is about national emissions and doesn't automatically say how much wood smoke is present in any one home.
View the original sourceThe RIVM describes pollen as part of air quality for people with hay fever. Actual exposure varies by location, vegetation and weather conditions, so national counts are only a general indication.
View the original sourceFor product-specific performance we hold ourselves to a higher standard of proof than for general air-quality information.
Product specifications on this site come from available manufacturer data and existing product documentation. We'll publish separate lab reports, certificates and ozone tests here as soon as the original documents are available per model. Until then, we don't present such specifications as independently proven health results.
An air purifier isn't a treatment and doesn't replace a doctor, medication or ventilation.
We state population, location and limitations when needed to understand a figure fairly.
General research into air pollution isn't proof that every device achieves the same result.
Always Healthy Air