160.47—Facilities for handling test, control, and reference substances.
(a)
As necessary to prevent contamination or mixups, there shall be separate areas for:
(1)
Receipt and storage of the test, control, and reference substances.
(2)
Mixing of the test, control, and reference substances with a carrier, e.g., feed.
(3)
Storage of the test, control, and reference substance mixtures.
(b)
Storage areas for test, control, and/or reference substance and for test, control, and/or reference mixtures shall be separate from areas housing the test systems and shall be adequate to preserve the identity, strength, purity, and stability of the substances and mixtures.