http://www.cd-bioparticles.com/p/PVA-Magnetic-Particles_20_193_217_697.htmlAbsolute Mag™ PVA Magnetic Particles, 15 nm (# WHM-G006) are covalently functionalized with polyvinyl acetate (PVA) and rich hydroxy groups on the surface, and can be used for further functionalization.Cell Isolation, Immunoassay, Proteins/Ligands Immobilization