19 C.F.R. § 151.83 Method of sampling.
Title 19 - Customs Duties
For determining the staple length of any lot of cotton for any Customs purposes, samples of the lot shall be taken in accordance with commercial practice.
Title 19: Customs Duties
PART 151—EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE
Subpart F—Cotton
§ 151.83 Method of sampling.

