High-quality substances support for a quick and careful cleaning of oxidations on your coins. Simply immerse the coin (best of all with rubberized tweezers) for 4-8 minutes in the immersion bath, wash up carefully and dab drying with a soft cloth. Admitted by the Federal Office of the Environment. With child lock. Different coin cleaning baths are available for gold, silver and copper coins as well as a mild universal cleaner without removing of oxidations.