---
kind: "section"
citation: "21 C.F.R. § 111.25"
title: "21"
number: "111.25"
heading: "What are the requirements under this subpart D for written procedures?"
url: "https://uscodex.org/cfr/21/111.25"
---

# §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.

## Notes

### Authority

Authority: 21 U.S.C. 321, 342, 343, 371, 374, 381, 393; 42 U.S.C. 264.

### Source

Source: 72 FR 34942, June 25, 2007, unless otherwise noted.