[Code of Federal Regulations] [Title 21, Volume 2] [Revised as of April 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR111.25] [Page 234] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 111_CURRENT GOOD MANUFACTURING PRACTICE IN MANUFACTURING, PACKAGING, LABELING, OR HOLDING OPERATIONS FOR DIETARY SUPPLEMENTS--Table of Contents Subpart D_Equipment and Utensils Sec. 111.25 What are the requirements under this subpart D for written procedures? You must establish and follow written procedures for fulfilling the requirements of this subpart D, including written procedures for: (a) Calibrating instruments and controls that you use in manufacturing or testing a component or dietary supplement; (b) Calibrating, inspecting, and checking automated, mechanical, and electronic equipment; and (c) Maintaining, cleaning, and sanitizing, as necessary, all equipment, utensils, and any other contact surfaces that are used to manufacture, package, label, or hold components or dietary supplements.