An audiometric technician who has completed the Council for Accreditation in Occupational Hearing Conservation (CAOHC) 20-hour initial certification course and maintains 5-year recertification through an 8-hour refresher. CAOHC certification is the recognized industry standard for occupational audiometric technicians. Certification is not required for technicians operating microprocessor audiometers, though the professional responsibility requirement still applies. (29 CFR 1910.95(g)(3))
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