1 full gallon - 128 Fl Oz 120ppm (minimum) concentrated Pure Colloidal Silver made exclusively by Guardian Of Eden. Certified Laboratory Analysis - SEE listing pictures for the report. If a seller has no laboratory proof, how do they even know what they are selling G.O.E. is the most respected natural health supplier since 1983. No worthless ingredients added to artificially inflate ppm level. 100% pure and natural nano silver atoms suspended in pure water. 12x stronger than 10ppm colloidal silver. ZERO contaminants. No added secret ingredients to artificially inflate ppm level like many others do. 100% pure and natural nano silver atoms suspended in pure water. Packaged in BPA-free Chemical Resistant plastic bottle. This is the most potent REAL colloidal silver you can buy at any price - with certified and registered laboratory analysis to prove it. Extremely discounted price for . Limited supply at this price.