No generally valid term for air-floating particleshttps://www.infastaub.de/entstaubungswissen/glossar/detail/?tx_dpnglossary_glossarydetail%5Bterm%5D=494&tx_dpnglossary_glossarydetail%5Baction%5D=show&tx_dpnglossary_glossarydetail%5Bcontroller%5D=Term&cHash=a4448472ce66fc692fb81b50b762bc63
- Generally: Respirable particles
- Physically: Floating particles with a negligible sedimentation rate. Particle diameter below 10 μm