21 CFR 111.315 - What are the requirements for laboratory control processes?
You must establish and follow laboratory control processes that are reviewed and approved by quality control personnel, including the following:
(b) Use of sampling plans for obtaining representative samples, in accordance with subpart E of this part, of:
(4) Product that you receive for packaging or labeling as a dietary supplement (and for distribution rather than for return to the supplier); and
(d) Use of criteria for selecting standard reference materials used in performing tests and examinations; and
Title 21 published on 2014-04-01.
No entries appear in the Federal Register after this date, for 21 CFR Part 111.