CFR›Title 42›Chapter I›Part 84›Subpart E ContainsSections 84.40–84.43CorpusDaily eCFRDisplayed edition2026-06-03Last updated2026-06-03 Subpart E—Quality Control Sections 84.40 § 84.40 Quality control plans; filing requirements. 84.41 § 84.41 Quality control plans; contents. 84.42 § 84.42 Proposed quality control plans; approval by the Institute. 84.43 § 84.43 Quality control records; review by the Institute; revocation of approval. Previous D Subpart D—Approval and Disapproval Next F Subpart F—Classification of Approved Respirators; Scope of Approval; Atmospheric Hazards; Service Time