Manufactured from select grades of coconut shell and acid washed to yield a high purity and low ash content. Features a high density, large micropore volume and high surface area. In properly designed systems, it will effectively remove chlorine, chloramines, lead, TCE, PCE, THM’s, Phenols, pesticides, detergents, taste & odor, etc. Meets AWWA Standard B-600-74, NSF & ANSI Standard 61 and Food Chemicals Codex Standards for drinking water applications.* Sold by weight not volume. *This information is from the Manufacturer.