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Through this paper researcher will try to meet the needs of sculptors and craftsmen who create articles in brass, and then as surface treatment who wish to do patina. Which can be done through chemicals to achieve different colors on brass, that give a natural aging or antique look to the art piece, by utilizing the reactive nature of brass. This paper is a documentation of an attempt to achieve different colors of patina through chemical reactions and oxidation process on brass by experimentation. Along with the preservation technique of brass patina. So, this is experimental research for the field of visual art (sculpture) by the support of science (chemistry), one more example of relation between Art and Science.