Note by the Secretariat I. Introduction 1. In accordance with articles 5 and 7 of the Rotterdam Convention, the Chemical Review Committee at its seventh meeting reviewed notifications of final regulatory action for perfluorooctane sulfonic acid, its salts and its precursors from Canada, the European Union and Japan, along with the supporting documentation referenced therein. Taking into account each of the specific criteria set out in Annex II to the Rotterdam Convention, the Committee concluded that the criteria of that Annex had been met. Accordingly, the Committee agreed at its seventh meeting to recommend to the Conference of the Parties that perfluorooctanesulphonic acid (PFOS) (CAS No. 1763-23-1), PFOS potassium salt (CAS No. 2795-39-3), PFOS ammonium salt (CAS No. 29081 56 9), PFOS lithium salt (CAS No. 29457-72-5), PFOS diethanolamine salt (CAS No. 70225-14-8) and perfluorooctane sulfonyl fluoride (PFOSF or POSF) (CAS No. 307-35-7), be included in Annex III to the Convention as industrial chemicals. In addition, the Committee adopted a rationale for that recommendation, agreed to establish an intersessional drafting group to produce a draft decision guidance document and agreed on a detailed workplan for its development.