The MasterTech Line features traditional hematoxylins that are optimized for performance. Gill hematoxylin is available in three strengths with Gill 1 being ideal for Cytology staining. This single strength formulation optimally stains Gynecological and Non-Gynecological specimens. Gill 1 is a general purpose progressive nuclear stain that is also useful as a nuclear counterstain for Special stains and IHC.