40 CFR § 792.47 - Facilities for handling test, control, and reference substances.
---
identifier: "/us/cfr/t40/s792.47"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 792.47 - Facilities for handling test, control, and reference substances."
title_number: 40
title_name: "Protection of Environment"
section_number: "792.47"
section_name: "Facilities for handling test, control, and reference substances."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "R"
subchapter_name: "TOXIC SUBSTANCES CONTROL ACT"
part_number: "792"
part_name: "GOOD LABORATORY PRACTICE STANDARDS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 2603."
regulatory_source: "54 FR 34043, Aug. 17, 1989, unless otherwise noted."
cfr_part: "792"
---
# 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.