Rule 25
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
Any lot of tobacco containing 10 percent or less of oxidized tobacco, except as provided in rule 12, shall be designated by the combination symbols “PO,” “XO,” or “BO.” Crude or green tobacco containing 10 percent or less of oxidized shall be grade “N2.”
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.