CFR›Title 40›Chapter I›Part 171 ContainsSubparts A–DCorpusDaily eCFRDisplayed edition2026-05-22Last updated2026-05-22 PART 171—CERTIFICATION OF PESTICIDE APPLICATORS Subparts A Subpart A—General Provisions Sections 171.1–171.5 B Subpart B—Certification Requirements for Applicators of Restricted Use Pesticides Sections 171.101–171.107 C Subpart C—Supervision of Noncertified Applicators Section 171.201 D Subpart D—Certification Plans Sections 171.301–171.311 Authority7 U.S.C. 136-136y.Source39 FR 36449, Oct. 9, 1974, unless otherwise noted. Previous 170 Part 170—Worker Protection Standard Next 172 Part 172—Experimental Use Permits