For more than 25 years, Rowley Biochemical Inc. (RBI) has been a manufacturer of a variety of equipment and supplies for physicians and surgeons. Based in Danvers, Mass., the firm supplies several biochemical research facilities, university and clinical laboratories with in-vitro stains and reagents. The company provides dyes and stains to more than 1500 hospitals and laboratories in the United States. Rowley Biochemical Inc. (RBI) offers its vast customer base an array of products that include bone and calcium stains, bone marrow stains, connective tissue stains, fixing fluids, dye powders and more.