Martyr Anodes Mercury Zinc Trim Tab. Alloy selection is critical for proper protection. Zinc is recommended for use in salt water (not recommended for fresh water). High-quality Martyr anodes are pressure diecast and manufactured to strict quality standards through an ISO 9001 Quality Management System, Martyr anodes offer maximum protection by maintaining quality alloys, free from impurities like iron, which can compromise performance. Provides low cost cathodic protection of ocean-going vessels, structures and equipment constructed of iron, steel, aluminum, magnesium, and other metals
