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    Since 1963, scientists have relied on Alfa Aesar to supply high purity raw materials for a variety of research and development applications. Today, we are a recognized leader in the manufacture and supply of fine chemicals, metals and materials in sizes from gram-scale catalog items to semi-bulk and bulk production quantities. With over 22,000 standard catalog and bulk products in stock and the custom manufacturing capabilities to supply many more specialized items, we are a one-stop source for research chemicals, metals and materials.