ISO 9377-2

First

Published by International Organization for Standardization (ISO)

The CFR incorporates ISO 9377-2 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.

The edition the CFR requires

ISO 9377-2, edition 2000-10-15, Water Quality—Determination of hydrocarbon oil index—Part 2: Method using solvent extraction and gas chromatography

As the CFR lists it: “International Standard ISO 9377-2 First edition 2000-10-15, Water Quality—Determination of hydrocarbon oil index—Part 2: Method using solvent extraction and gas chromatography (“ISO 9377-2”)”

Listed in 46 CFR 162.050-4(c)(2); required by46 CFR 162.050-39 ↗

How to read it

Where to get itISO Store ↗

A free or purchased copy may not be the edition the CFR names; check it against the edition above. Every incorporated standard can also be inspected at the National Archives (NARA) and at the agency named in the section that lists it.

ISO 9377-2 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.