Latex beads made of polystyrene are widely used in various scientific and industrial applications due to their uniform size, stability, and ease of functionalization. In biomedical research, they serve as calibration standards for flow cytometry and microscopy, ensuring accurate instrument performance. They are also employed as carriers for antibodies, antigens, or other biomolecules in diagnostic assays, such as ELISA, enabling the detection of target analytes with high sensitivity. In material science, these beads are used as templates for creating nanostructured materials or as fillers to enhance the properties of composites. Additionally, they play a role in drug delivery systems, where their surface can be modified to encapsulate and release therapeutic agents in a controlled manner. In environmental studies, polystyrene latex beads are utilized to model the behavior of microplastics in aquatic systems, aiding in understanding their impact on ecosystems. Their versatility and adaptability make them valuable tools across multiple disciplines.