Description_x000D_ Application_x000D_ Eosin Y disodium salt has been used as a counterstain in immunocytochemistry and immunohistochemistry._x000D_ Packaging_x000D_ 25, 100 g in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm. In histopathology, it is applied as a counterstain after hematoxylin and before methylene blue. It is also used as a background stain, thereby giving contrast to the nuclear stains._x000D_ Suitability_x000D_ Certified for use as a counterstain against hematoxylin; as a constituent of Wright stain; in modified Nocht′s stain; as a constituent in eosin-methylene blue medium.