Magnetic silicate particles (sicastar®-M)

• Are available in sizes of 350 nm and 1.5 µm
• Are produced by hydrolysis of ortho-silicates in the presence of magnetite,
• Have a hydrophilic surface with terminal Si-OH groups (plain),
• Have monomodal size distributions,
• Can be easily separated with conventional permanent magnets,
• Are very stable in organic media and at high temperatures,
• Are available with the surface functionalities NH2, COOH, N-Hydroxysuccinimide (NHS) and epoxy for the covalent binding of proteins, antibodies or other molecules,
• Are offered with the nickel(II) complex of nitrilotriacetic acid (Ni-NTA) for the binding of histidine-labeled proteins,
• Are available with a hydrophobic octadecyl (C18) surface.