Code of Federal Regulations Title 40. Protection of Environment § 40.160.47 Facilities for handling test, control, and reference substances

(a) As necessary to prevent contamination or mixups, there shall be separate areas for:

(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.