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TOOLS Mag-Beads-Amine are magnetic beads with surface functional group -NH2. The magnetic beads are made of Fe3O4 magnetic sphere core and being coated with dextran. When chemical modification of dextran occurs, the primary amino group (-NH2) are joined to the magnetic beads through a short hydrophilic linker. The hydrophilic surface ensures the magnetic beads excellent dispersion ability and easy handling property in a wide variety of buffers. The magnetic beads with surface-reactive amino groups allow immobilization of ligands such as proteins, peptides, carbohydrates or other target specific molecules.