Used primarily in clinical and reproductive laboratories to assess sperm morphology in semen analysis. The stain allows clear visualization of sperm head, midpiece, and tail structures under a microscope, helping to identify abnormal forms that may affect fertility. By differentially coloring cellular components—such as the nucleus and acrosomal region—this kit supports accurate grading of sperm according to WHO criteria. It is an essential tool in male infertility evaluations, aiding in diagnosis and guiding treatment decisions in assisted reproductive technologies like IVF and IUI.