http://www.cd-bioparticles.com/p/Amine-Magnetic-Particles_20_193_209_214.htmlAbsolute Mag™ Amine Magnetic Particles, Silica Matrix, 3-4 μm (# WHM-Q020) are prepared by coating the silica core with a layer of magnetic particles. The magnetic silica particles are particularly useful in applications of DNA/RNA purification.DNA/RNA Purification, Cell Isolation, Immunoassay, Clinical Diagnosis