. . . "The ultrafiltration unit 12 is designed to remove contaminants, such as particles, bacteria, colloidal materials and organic carbons, from deionized water so as to provide a supply of ultrapurified deionized water for the rinse/dry module 14; and the rinse/dry module 14 is designed to clean and dry the surfaces of articles which must be free of contaminants such as particles, organic materials, me" .