Our carboxylate-modified polystyrene latex microspheres are suitable for the covalent immobilization of proteins, peptides, and nucleic acids. Amine-terminated proteins, DNA, or other molecules can be attached to the carboxyl groups on the bead surface using EDAC-mediated coupling. New to our beads and covalent coupling? We offer the PolyLink Protein Coupling Kit to simplify your workflow.nCarboxyl polymer microspheres are available in diameters from ~25 nm to ~20 µm with typical CVs of 10%. The products are ~10% solid (w/w) aqueous suspensions provided in 0.5, 1.0, 1.5, and 5.0 g amounts. The aqueous suspension contains surfactant to prevent aggregation and sodium azide to prevent bacterial contamination.