7 C.F.R. § 966.56
(a) The committee, with the approval of the Secretary, may prescribe adequate safeguards to prevent handling of tomatoes pursuant to § 966.53 or § 966.54 from entering channels of trade for other than the specific purpose authorized therefor, and rules governing the issuance and the contents of Certificates of Privilege if such certificates are prescribed as safeguards by the committee. Such safeguards may include requirements that: