bioWORLD's ForMaxâ„¢ Methyl Green is a superior formulation of methyl green that stains cell nuclei light green. It is suitable to use with a wide range ofHRP and AP enzyme substrates. By using a simple, two-step procedure optimal tissue staining can be achieved. Methyl green counterstain provides an alternative in multiple labeling when hematoxylin intensifies with theHRP or AP substrate colors. Suitable as a counterstain with non-aqueous mounting media.