---
kind: "section"
citation: "40 C.F.R. § 792.47"
title: "40"
number: "792.47"
heading: "Facilities for handling test, control, and reference substances."
url: "https://uscodex.org/cfr/40/792.47"
---

# §792.47. 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.

## Notes

### Authority

Authority: 15 U.S.C. 2603.

### Source

Source: 54 FR 34043, Aug. 17, 1989, unless otherwise noted.