{"data":{"id":"us/42-cfr-84.53","jurisdiction":"us","citation":"42 CFR 84.53","heading":"Service time; classification.","body":"(a) Respirators described in subparts H through L of this part shall be classified, where applicable, as approved for use during the following prescribed service times:\n(1) Four hours;\n(2) Three hours;\n(3) Two hours;\n(4) One hour;\n(5) Forty-five minutes;\n(6) Thirty minutes;\n(7) Fifteen minutes;\n(8) Ten minutes;\n(9) Five minutes; or\n(10) Three minutes.\n(b) Other service times may be prescribed by the Institute.","path":["Title 42—Public Health","CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER G—OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES","PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES","Subpart F—Classification of Approved Respirators; Scope of Approval; Atmospheric Hazards; Service Time"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-42.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:11Z","sha256":"a2f90520e493f6d867bb0ec996e1a15f6019add39ec4aae1249e3969183461dc","source_id":"us-cfr","stale":true,"prev":"us/42-cfr-84.52","next":"us/42-cfr-84.60"},"notice":"GroundRules: Original legal text. Not legal advice."}