CFR›Title 16›Chapter II›Part 1109›Subpart C ContainsSection 1109.21CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart C—Conditions and Requirements for Composite Testing Sections 1109.21 § 1109.21 Composite testing. Previous B Subpart B—Conditions and Requirements for Specific Consumer Products, Component Parts, and Chemicals