RICHARD-ALLAN SCIENTIFIC COMPANY 7211 Epredia

Hematoxylin 7211 is a rapid, progressive hematoxylin. The product is a hybrid between classical Harris and Gill formulations: it provides the classic intensity and hues of a Harris hematoxylin and the rapid progressive qualities of a Gill hematoxylin. Differentiation is not required, but if desired Clarifier 1 should be used. Clarifier 1 will eliminate any background staining that may be caused by the use of excess gelatin or other adhesives in the water bath. Clarifier 2 can be used as well; however, a shorter immersion time is required. Hematoxylin 7211 does not have an affinity for acid mucopolysaccharide (mucin) staining, as do some other hematoxylin formulations. It provides consistent, well-delineated nuclear staining results.