Magnetic dextran nanoparticles (nanomag®-D)

• Are available with diameters of 130 nm, 250 nm and 500 nm,
• Can be separated on the permanent magnet,
• Are manufactured using the core-shell method with a magnetite core and a dextran shell,
• Consist of 75-80% (w/w) magnetite in a matrix of dextran (40,000 Da),
• Are offered with the surface groups OH (plain), NH2, PEG-NH2 and COOH or PEG-COOH for the covalent binding of proteins, antibodies and other molecules,
• Are available with covalently bound proteins (avidin, streptavidin, protein A) or other biomolecules (biotin),
• Can be produced with covalently bound antibodies on request,
• Are offered with the nickel(II) chelator nitrilotriacetic acid (NTA) or ready-to-use with the corresponding nickel complex (Ni-NTA) for the binding of histidine-labeled proteins,
• Are available with different hydrophilic surfaces (PEG 300, PEG 2000, PEG-NH2 or PEG-COOH).