Alfa Aesar, part of Thermo Fisher Scientific, is a leading manufacturer and supplier of chemicals, metals, and life science products for research and development. For more than 50 years, scientists have relied on Alfa Aesar to supply high purity raw materials for a variety of research and development applications. Today we offer over 38, 000 products in stock, in sizes from gram-scale catalog items to semi-bulk and bulk production quantities. With custom manufacturing capabilities to supply many more specialized items, we are a one-stop source for research chemicals, metals and materials. Our product line consists of a comprehensive range of: inorganics organics organometallics pure metals and elements precious metal compounds and catalysts biochemicals fuel cell products nanomaterials rare earths analytical products select laboratory equipment