U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 211Subpart B - Subpart B—Hearing Protective Devices
§ 211.201 - Applicability.
§ 211.202 - Effective date.
§ 211.203 - Definitions.
§ 211.204 - Hearing protector labeling requirements.
§ 211.204-1 - Information content of primary label.
§ 211.204-2 - Primary label size, print and color.
§ 211.204-3 - Label location and type.
§ 211.204-4 - Supporting information.
§ 211.205 - Special claims.
§ 211.206 - Methods for measurement of sound attenuation.
§ 211.206-1 - Real ear method.
§ 211.206-2 - Alternative test data.
§§ 211.206-3—211.206-10 - §Alternative test methods. [Reserved]
§ 211.207 - Computation of the noise reduction rating (NRR).
§ 211.208 - Export provisions.
§ 211.210 - Requirements.
§ 211.210-1 - General requirements.
§ 211.210-2 - Labeling requirements.
§ 211.211 - Compliance with labeling requirement.
§ 211.212 - Compliance audit testing.
§ 211.212-1 - Test request.
§ 211.212-2 - Test hearing protector selection.
§ 211.212-3 - Test hearing protector preparation.
§ 211.212-4 - Testing procedures.
§ 211.212-5 - Reporting of test results.
§ 211.212-6 - Determination of compliance.
§ 211.212-7 - Continued compliance testing.
§ 211.212-8 - Relabeling requirements.
§ 211.213 - Remedial orders for violations of these regulations.
§ 211.214 - Removal of label.
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