ISO 13320:2009 PDF Download

A standard called ISO 13320:2009 offers instructions on how to determine particle size using laser diffraction techniques. The investigation of particles in different two-phase systems, including powders, sprays, aerosols, suspensions, emulsions, and gas bubbles in liquids, is the subject of this study. It does not, however, address the particular standards for determining particle size in particular materials.

The standard is applicable to particles of a size between 0.1 and 3 mm, roughly. It emphasizes that the size range can be widened below 0.1 m and beyond 3 mm with particular equipment and environmental factors.

The standard's handling of non-spherical particles is one of its key considerations. According to the statement, the method's optical model assumes spherical particle shape; hence, for non-spherical particles, a size distribution is reported. This distribution is based on the volumetric sum of spherical particles' expected scattering pattern and measured scattering pattern, which are both matched. It is crucial to keep in mind that the final particle size distribution might not match those obtained by applying other physical principles, such as sedimentation or sieving.