Latex beads made of polystyrene are widely used in various scientific and industrial applications. They are commonly employed as calibration standards in flow cytometry and microscopy due to their uniform size and consistent properties. These beads are also utilized in immunoassays and diagnostic tests, where they serve as solid supports for the attachment of antibodies or antigens, enabling the detection of specific biomolecules. In research, polystyrene latex beads are used to study cell interactions, phagocytosis, and drug delivery mechanisms. Additionally, they are applied in the development of coatings, adhesives, and composite materials, where their stability and uniformity enhance performance. Their versatility makes them valuable tools in both laboratory and industrial settings.