A Little Background Since 1994, Natural Path Silver Wings has done only one thing-manufacture safe, pure, high quality true silver. This makes them the oldest colloidal silver company in the U.S! Founded and formulated by siblings Dr. Mark Smith, ND, PhD, MD (MA) and Liz Smith, RN, Silver Wings is committed to rigorous third-party testing & quality control. Atomic Colloidal Silver Atomic colloidal silver is a trace mineral containing a mixture of pharmaceutical grade, ultra-fine silver particles with pharmaceutical grade ultra-pure water. Composed of a full silver atom, colloidal silver is stable at high concentrations. PPM vs Particle Size Particle size is important for safety & absorption-the smaller the particle the better! Silver Wings products range from 1-10 nanometers (colloidal silver is allowed to range from 1-100 nanometers). Parts per million (PPM) is the total number of silver particles per serving. The greater the PPM = the stronger the concentration & the darker in color the liquid will appear. *These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.