If you are sourcing MMO (Mixed Metal Oxide) titanium anodes for industrial electrolysis, you already know the challenge: every supplier claims their coating is "the best." But when you dig into the technical details — iridium, tantalum, ruthenium — the differences are real, and choosing the wrong coating can cost you thousands in early replacements and production downtime. This guide cuts through the marketing noise. By the end, you will know exactly which MMO coating fits your application, your operating conditions, and your budget. What Is MMO Coating and Why Does It Matter?