NHS-activated magnetic particles are magnetic beads coated with a high density of NHS (N-hydroxylsuccinimide) functional groups on the surface. NHS-activated magnetic particles have shown important value in couple to proteins or other ligands with amino-functionalities. Especially, some particles are used to specifically conjugate primary amine-containing targeted protein or ligands in a simple mix-and-go format for use in custom affinity purification experiments with significant low non-specific binding. https://www.cd-bioparticles.com/product/nhs-activated-list-128.html