This part of the standard specifies constructional, design and performance requirements, test methods, marking requirements and user information for ear-muffs when fitted to an industrial safety helmet. It calls for information to be made available concerning the sound attenuation characteristics of the ear-muffs measured in  accordance with EN 24869-1:1992, and defines a minimum level of attenuation required for compliance with this specification.  Because one model of ear-muffs designed to be ...view more

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