Uniform polystyrene microspheres are widely used in various scientific and industrial applications due to their consistent size and shape. In biomedical research, they serve as calibration standards for flow cytometry and particle size analyzers, ensuring accurate measurements. They are also employed in drug delivery systems, where their uniformity allows for controlled release of therapeutic agents. In diagnostics, these microspheres act as carriers for antibodies or antigens in immunoassays, enhancing detection sensitivity. Additionally, they are utilized in chromatography as stationary phases for separating complex mixtures. In material science, they function as templates for creating porous structures or as additives to improve the properties of composites. Their uniformity and versatility make them essential in advancing research and technology across multiple fields.