Endure™-XT Hematoxylin is specific to the Endure™ stain line to produce darker staining. Endure™ H&E Staining System is designed to produce precise, consistent H&E staining. Staining times in hematoxylin and eosin will depend on the use and the personal preference of the diagnosing physician. CDI has guidelines that will help establish a custom protocol for your specific needs. Each component is analytically optimized for staining consistency and longevity.