Most commonly used as a catalyst for methanol oxidation in Direct Methanol Fuel Cells (DMFC), Platinum Ruthenium on Vulcan XC 72 (Carbon) is available in various sizes. This catalyst has a standard 1:1 atomic ratio.
Platinum Ruthenium (PtRu) electrocatalysts, such as this Platinum Ruthenium on Vulcan XC-72R, have shown improved tolerance to cobalt-contaminated hydrogen fuel streams as compared to Platinum (Pt).

You can select quantities of 1, 5, or 10 grams.