✔ 99% PURE COPPER. The most asked question about these dispensers is "Are these dispensers made of pure copper or is it copper plated on some base metal?" We are manufacturers of these dispensers. We use only pure and solid copper to manufacture these dispensers. We lab test each and every batch of our copper raw material for its purity before using it. That is the reason we are so sure about the purity of copper. Simply put "Our dispensers are made from 99% Pure and Solid Copper". No leave no room for doubt on the purity of copper. Period. ✔ NATURALLY KEEPS WATER CHILLED FOR A LONGER PERIOD OF TIME. Natural Water cooler. Because this dispenser is made of the PURE COPPER water automatically cools down to about 2 degrees below the room temperature. Add Ice to get Chilled water. Copper keeps.