http://www.cd-bioparticles.com/p/Thiol-Magnetic-Particles_20_193_222_506.htmlAbsolute Mag™ Thiol Magnetic Particles (# WHM-B016) are uniform disperse size distribution magnetic particles, coating with thiol groups on the surface of particles. These particles have excellent efficiency of biosimilar protein and antibody purification and are better suited for automation of the purification process. Antibody/Protein Purification