Microspheres are widely used in cosmetics and personal care products, as well as biomedical and health science research, chromatography and microscopy techniques, fluid visualization and fluid flow analysis. We offer polystylene (PS), poly(methyl methacrylate) (PMMA), and poly(glycidyl methacrylate) (PGMA) based monodisperse microspheres with or without functional surface groups. Monodispersed sub-micron spheres are also available.