§111.25. What are the requirements under this subpart D for written procedures?

Calibrating instruments and controls that you use in manufacturing or testing a component or dietary supplement;

Calibrating, inspecting, and checking automated, mechanical, and electronic equipment; and

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.