The Best Nano Silver Colloidal Silver Mineral Supplements 68 OZ 20 PPM Colloidal Silver Liquid

About this item Made with the highest purity, sterile reagent grade deionized water, with no potentially dangerous protein products Four 17 ounce bottles World's Highest Particle Surface Area which is up to 600 times greater than other products. You need a PWT meter to test the product because its colloidal Silver and ionic Silver.