The Frankford ArsenalAA(R) Ultrasonic Brass Cleaning Solution was scientifically formulated to quickly remove carbon buildup, tarnish, and oxidation on brass. It was also specially designed to be used with the Frankford Arsenal line of ultrasonic cleaners. Frankford Arsenal cleaning solutions are so strong that they can be used for multiple cleaning cycles before having to mix new solutions up. Get the best cleaning results possible with the Ultrasonic Brass Cleaning Solution.