Yellow Metal Corrosion Inhibitor

Systems containing copper and high copper alloys such as brass (yellow metals) are not protected by the typical inhibitors used for steel. They require special corrosion inhibitors, like AQUAGUARD AZ to prevent corrosion and reduce particulate deposition.

AQUAGUARD AZ has been specifically formulated using proven chemistry to effectively protect copper and copper alloys at low dosage rates. AQUAGUARD AZ works by rapidly forming a protective film on the metal surface, a process known as passivation. Maintaining the protective film is easily accomplished using low levels of AQUAGUARD AZ. When used in multi-metal systems, AQUAGUARD AZ provides additional protection to aluminum and steel.


  • All organic yellow metal corrosion control
  • Proven chemistry
  • Concentrated for cost effective use
  • Low use dosage
  • Provides additional corrosion protection to aluminum and steel when used in multi-metal systems


AQUAGUARD AZ can be used in a variety of water treatment piping and equipment as necessary to prevent yellow metal corrosion and enhance the protection of aluminum and steel in multi-metal systems.

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