CFR›Title 10›Chapter II›Part 431›Subpart S›Subject Group Test Procedures ContainsSections 431.323–431.324CorpusDaily eCFRDisplayed edition2026-09-22Last updated2026-09-22 Sections 431.323 § 431.323 Materials incorporated by reference. 431.324 § 431.324 Uniform test method for the measurement of energy efficiency and standby mode energy consumption of metal halide lamp ballasts. Previous Energy Conservation Standards Energy Conservation Standards