Choose a Silver You Can Trust! Sovereign Silver is truly in a class of its own. Here are the characteristics that guarantee it to be the silver of choice:Smallest average particle size ever seen - 0.8 nm (nanometers) / 0.0008 microns / 8 Angstroms - confirmed by Univ. of Miami Medical School 96% actively charged particles - confirmed in a University of Miami study Safe low concentration of 10 ppm (parts-per-million) - confirmed at an FDA approved laboratory Made from 99.99% pure silver Made with ultra-pure, medical-grade water (the only other ingredient). Crystal clear and virtually tasteless.