19 C.F.R. § 151.46
Allowance for detectable moisture and impurities
An allowance for all detectable moisture and impurities present in or upon imported petroleum or petroleum products shall be made in accordance with § 158.13 of this chapter.
An allowance for all detectable moisture and impurities present in or upon imported petroleum or petroleum products shall be made in accordance with § 158.13 of this chapter.