Kyzen’s Metalnox M6330 high-alkaline aqueous solution cleans and brightens a variety of metal parts. It is said to be particularly effective at removing heavy greases and oils found in CNC machining operations, and to provide long-term corrosion protection on ferrous and copper-based alloys, including brass and bronze. The solution will not discolor sensitive metals such as brass and other copper-based alloys, the company says. Aluminum alloys should be tested to determine compatibility. The solution should be diluted for use in spray or immersion systems.