ISO INTERNATIONAL STANDARD 21501-2 Secondedition 2019-11 Determination of particle size distribution Single particle light interaction methods - Part 2: Light scattering liquid-borne particle counter Determination de ladistribution granulometrique-Methodes d'interaction lumineusedeparticulesuniques Partie2: Compteur de particules en suspension dans un liquide en lumiere dispersée Reference number IS021501-2:2019(E) @ IS0 2019 IS021501-2:2019(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2019 All rights reserved. Unless otherwise specified,or required in the context of its implementation, no part of this publication may below orIso's memberbody in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Fax:+4122749 09 47 Email: copyright@iso.org Website:www.iso.org Published in Switzerland i @ IS0 2019 - All rights reserved