60.60 Standard published Dec 10, 2025
ISO
ISO/TC 24/SC 4 Particle characterization
International Standard
19.120 Particle size analysis. Sieving
This document specifies characteristics of a light scattering aerosol spectrometer (LSAS) which is used for measuring the size, number concentration and number-based size distribution of particles suspended in a gas. This document provide the calibration procedure and the validation method for aerosol spectrometers.
This document applies to:
— characterization of metered dose inhalers (MDI), dry powder inhalers (DPI) and nebulizers in pharmacy;
— production control of active agents;
— cut-off determination: impactors, cyclones and impingers;
— atmospheric aerosols: bio-aerosols, stables or composting facilities, nebulized droplets, measurements in street tunnels;
— fractional separation efficiency determination of filters.
WITHDRAWN
ISO 21501-1:2009
PUBLISHED
ISO 21501-1:2025
60.60
Standard published
Dec 10, 2025