; and (B) for covered chemical substances not described in subparagraph (A), prioritize covered chemical substances based on production volume. (4) Prohibition No person receiving an analytical reference standard or sample submitted under this subsection may use or transfer the analytical reference standard or sample for a commercial purpose. (5) Definition In this subsection, the term covered chemical substance means a perfluoroalkyl or polyfluoroalkyl substance with at least one fully fluorinated carbon atom that is included in the chemical substance list compiled and published under section 8(b). . 5. Manufacturing and processing notices for perfluoroalkyl and polyfluoroalkyl substances Section 5 of the Toxic Substances Control Act ( 15 U.S.C. 2604 ) is amended— (1) in subsection (h), by adding at the end the following: (7) PFAS (A) In general Except as provided in subparagraph (B), this subsection does not apply to any chemical substance that is a perfluoroalkyl or polyfluoroalkyl substance. (B) Drugs and devices Paragraph (3) applies to a chemical substance that is a perfluoroalkyl or polyfluoroalkyl substance which is manufactured or processed, or proposed to be manufactured or processed, solely for purposes of— (i) scientific experimentation or analysis with respect to a drug or device (as such terms are defined in section 201 of the Federal Food, Drug, and Cosmetic Act) or personal protective equipment (as such term is defined in section 20005 of the CARES Act); or (ii) chemical research on, or analysis of, such a chemical substance for the development of a drug or device (as such terms are defined in section 201 of the Federal Food, Drug, and Cosmetic Act) or personal protective equipment (as such term is defined in section 20005 of the CARES Act).