If you are in a pinch, Bougere says you can mix together a gallon of warm (never hot!) water and two heaping tablespoons of baking soda to give your brass pieces a quick clean. You'll also want to ...

Avoid soaking a brass fixture in water for too long, as doing so could lead to corrosion. Similarly, always remember to dry brass thoroughly if you clean it with water.

Remove the Lacquer Many solid-brass pieces are protected by a factory applied coating of lacquer. To clean away the tarnish, you must first strip off the lacquer.

J. W. Bond. Note: Measuring dezincification of brass by Schottky barrier diodes formed between semiconductor corrosion products and brass. Review of Scientific Instruments, 2010; 81 (10): 106101 ...

"My short term advice is to keep the brass in public environments free from corrosion through regular and thorough cleaning. In the longer term, using copper alloys with corrosion inhibitors ...