Profile: Bangs Laboratories Inc. supplies uniform polymeric and silica microsphere products for diagnostic, research, & flow cytometry applications. Our new Quantumplex™ flow cytometry multiplexing kits complements speciality microspheres for a variety of immunoassay, molecular and cell biology & standardization applications. Our functionalized polystyrene & poly methyl methacrylate microspheres are suitable for the covalent immobilization of proteins, peptides, and nucleic acids.