International Organization for Standardization

Particle size analysis — Laser diffraction methods - First Edition
 N 13320

Annotation

This International Standard provides guidance on instrument qualification and size distribution measurement of particles in many two-phase systems (e.g. powders, sprays, aerosols, suspensions, emulsions and gas bubbles in liquids) through the analysis of their light-scattering properties. It does not address the specific requirements of particle size measurement of specific materials.

This International Standard is applicable to particle sizes ranging from approximately 0,1 m to 3 mm. With special instrumentation and conditions, the applicable size range can be extended above 3 mm and below 0,1 m.

For non-spherical particles, a size distribution is reported, where the predicted scattering pattern for the volumetric sum of spherical particles matches the measured scattering pattern. This is because the technique assumes a spherical particle shape in its optical model. The resulting particle size distribution is different from that obtained by methods based on other physical principles (e.g. sedimentation, sieving).

Автоматический перевод:

Анализ размера частиц — Лазерные дифракционные методы - Первый Выпуск

Этот Международный стандарт дает представление об инструментальной квалификации и измерении распределения размера частиц во многих двухфазных системах (например, порошки, брызги, аэрозоли, приостановки, эмульсии и газовые пузыри в жидкостях) посредством анализа их свойств рассеяния света. Это не удовлетворяет определенные требования измерения размера частиц определенных материалов.