Uniform polystyrene microspheres are widely used in various scientific and industrial applications due to their consistent size and spherical shape. In biomedical research, they serve as calibration standards for flow cytometry and particle size analyzers, ensuring accurate measurements. They are also employed as carriers for drug delivery systems, enabling controlled release of therapeutic agents. In diagnostics, these microspheres are used as solid supports for immunoassays, enhancing the detection of biomarkers. Additionally, they play a crucial role in materials science, acting as templates for creating porous structures or as fillers to improve the mechanical properties of composites. Their uniformity makes them ideal for use in chromatography as stationary phases, facilitating efficient separation of molecules.