The Amos AIHS 660, fully automated IHC staining instrument, offers several benefits to improve the workflow in the pathology laboratories for ensuring the pathologists only receive the consistent and high-quality slides that help ensure patients get accurate answers in a cost effective way. The automated procedures in AIHS 660 include (1)Dewax (2)Antigen Retrieval (3)Blocking (4)Antibodies staining (5)DAB chromogen incubating (6)Hematoxylin staining . The standardization of the test method of IHC stainer is becoming more and more important with the wide use of the IHC stainer technology in the modern pathologic diagnosis because it has a bearing on the prognosis and treatment of the patient .