GB/T 38879-2020

This standard specifies the use of color image analysis for determining particle size distribution, covering both the measurement principles and the operational procedures for analyzing digital images of particles. It is applied in industries such as pharmaceuticals, chemicals, and materials science for quality control and research, particularly where traditional sieving or laser diffraction methods are insufficient for characterizing irregular or multi-colored particles. The standard is relevant for laboratory testing environments that require automated or semi-automated particle characterization from optical microscopy or camera-based imaging systems.