Biorbyt Carboxyl Magnetic Beads (5 μm) are superparamagnetic iron oxide microspheres functionalized with carboxyl groups, enabling efficient covalent conjugation of biomolecules like proteins and oligonucleotides via EDC chemistry. They are widely used in immunoprecipitation, cell separation, and protein-nucleic acid interaction studies, serving as essential tools for in vitro biomedical research.