You must establish and follow laboratory control processes that are reviewed and approved by quality control personnel, including the following:

1. (a) Use of criteria for establishing appropriate specifications;

2. (b) Use of sampling plans for obtaining representative samples, in accordance with subpart E of this part, of:

   1. (1) Components, packaging, and labels;
   2. (2) In-process materials;
   3. (3) Finished batches of dietary supplements;
   4. (4) Product that you receive for packaging or labeling as a dietary supplement (and for distribution rather than for return to the supplier); and
   5. (5) Packaged and labeled dietary supplements.
3. (c) Use of criteria for selecting appropriate examination and testing methods;
4. (d) Use of criteria for selecting standard reference materials used in performing tests and examinations; and
5. (e) Use of test methods and examinations in accordance with established criteria.