Alfa Aesar, a Johnson Matthey Company, is a leading international manufacturer and supplier of research chemicals, metals and materials. With over 36,000 products listed in its catalogs, Alfa Aesar is the single source for customers' needs for chemicals and materials in sizes for research and scale up. The Alfa Aesar catalog carries materials for biological research, organic compounds, high purity inorganics, pure elements, alloys, precious metal catalysts, AA/ICP standards and more. Alfa Aesar has sales offices and distribution facilities throughout North America, Europe and Asia and a distributor network covering the globe.