Absolute Mag™ Anti-Bovine IgA Magnetic Particles, 1 μm 1 μm magnetic particles conjugated to the anti-Bovine IgA antibody. They can be used for the purification of the bovine IgA. https://www.cd-bioparticles.com/product/absolute-mag-anti-bovine-iga-magnetic-particles-1-m-item-whm-24tf40-h-50550.html