The International Standards Organization (ISO) has released ISO/TS 21357:2022 Nanotechnologies — Evaluation of the mean size of nano-objects in liquid dispersions by static multiple light scattering (SMLS).

The document, prepared by Technical Committee ISO/TC 229, provides guidance and requirements for the determination of the mean (spherical) equivalent diameter of nano-objects dispersed in liquids such as particles, droplets or bubbles, using the static multiple light scattering (SMLS) technique. This technique is applicable to a wide range of materials and does not require dilution of concentrated samples.

Further information, as well as the standard, is available at this link.