ISO 27891
Aerosol particle number concentration - Calibration of condensation particle counters
Partikelanzahlkonzentration - Kalibrierung von Kondensationspartikelzählern
Responsible national committee
NA 005-11-42 AA - Particle measurement (national mirror committee for ISO/TC 24/SC 4)
Responsible international committee
ISO/TC 24/SC 4/WG 12 - Electrical mobility and number concentration analysis for aerosol particles