46 CFR §162.050-39
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The collection and testing of all samples of oil in water from the required test will be accomplished in accordance with ISO 9377-2 (2000), Water Quality—Determination of hydrocarbon oil index-Part 2: Method Using solvent extraction and Gas Chromatography (incorporated by reference, see § 162.050-4).