Particle size analysis is a scientific method used to determine the size distribution of particles in a sample. This analysis is important in various fields, including pharmaceuticals, materials science, and environmental studies, as the size of particles can affect their behavior, reactivity, and performance in different applications. The process typically involves techniques such as sieve analysis, laser diffraction, or dynamic light scattering. By measuring the sizes of particles, researchers can gain insights into the physical properties of materials, optimize manufacturing processes, and ensure quality control in products ranging from powders to suspensions.