Fuller Engineering Inc.’s Demo Organic Filter is designed to demonstrate the effectiveness of granular activated carbon (GAC) for organic contaminant removal from tap water. It measures approximately three inches (76.2 mm) in diameter and eight inches (203.2 mm) tall. The unit can also be used to demonstrate chlorine removal from tap water. Both the filter and a one-ounce bottle of organic indicator are available.www.FullerEng.comsales@FullerEng.com