Oxidation is a natural process that occurs when copper is exposed to oxygen and moisture. This results in the formation of a layer of copper oxide on the surface of the metal. While this layer can protect the copper from further corrosion, it can also give the metal a dull and unsightly appearance.
There are a number of different methods that can be used to clean oxidized copper. One common method is to use a vinegar and salt solution. To do this, simply mix equal parts white vinegar and salt in a bowl. Then, apply the solution to the oxidized copper using a sponge or cloth. Allow the solution to sit for a few minutes, then rinse it off with clean water. Another common method for cleaning oxidized copper is to use a commercial copper cleaner. These cleaners are typically made with a mild acid, such as phosphoric acid, which helps to dissolve the copper oxide. To use a commercial copper cleaner, simply follow the directions on the product label.
