Our Colloidal Silver is 10-20% ionic and 80-90% particulate (colloidal) silver. The only ingredients in this product are purified water and premium-grade silver, and we insist on quality ingredients that have been through a thorough approval process, meaning we offer you colloidal silver you can trust. Our silver contains particle sizes in the region of 0.6 - 5 nanometres. These small particles are in the nano-range and are naturally occurring. The small size of the silver particles is important because smaller particles provide a greater surface area per volume which in turn allows the silver to exert a greater effect.