Introducing BU Plus Residue Remover and Brightener Cleaning… what a “dirty” word in Numismatics! Shhhhh! Nobody’s supposed to know! Acids, acetone, soaps, detergents, solvents, lemons, vinegar, alcohol, hydrogen peroxide... Are you tired of your favorite products being diluted or weakened? The problem has finally been solved and at a price anybody could afford. Can you contain your curiosity? Brought to you by CDI - Numismatic Division, the same manufacturer of Conserv Safe Coin Solvent, BU Plus is a special rinse for use on coins and other durable objects for the purpose of removing residues and brightening metallic surfaces. This product utilizes a strong caustic base that can be diluted with water if needed and it is always recommended that gloves be worn while handling chemicals. BU Plus can be used on silver, gold, copper, nickel, bronze, and brass coins in circulated, uncirculated or proof condition. Do not use on aluminum. As we like to say, "Because Sometimes We Need It".