D.C. Code § 48-106: Furnishment of samples for analysis.

Every person offering for sale or delivering to any purchaser any drug or article of food included in the provisions of this chapter shall furnish to any analyst or other officer or agent of the Mayor a sample sufficient for the purpose of analysis of any such drug or article of food which is in his possession. The Mayor may collect, without cost, and examine samples of food sufficient to analyze in order to determine compliance with this chapter.