Rule 3
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
The grade of unsorted tobacco shall be based upon a representative sample of the packing. A minimum of 10 percent of the bundles or bales shall be selected at random for sampling; a higher percentage may be sampled at the discretion of the inspector. To obtain the sample, a sufficient amount of tobacco shall be drawn to be representative of each selected bale. In determining the grade, the inspector shall consider the quality of all samples. The grade assigned shall represent the quality of the lot as a whole.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.