MagneSil(TM) Paramagnetic Particles are silica-paramagnetic particles with an affinity for nucleic acids under defined conditions. Particle structure and solution composition can be altered to selectively adsorb nucleic acids based upon type and size. These properties have been used to develop purification methods based on a three-step bind, wash, and elute process. The MagneSil(TM) technology is readily adaptable to robotic platforms, allowing complete automation of the purification process in either 96- or 384- well plate formats. This article introduces the basic physical and performance characteristics of the MagneSil(TM) Paramagnetic Particles.