This part of the specification covers constructional, design and performance requirements for ear-muffs intended for use as hearing protectors.
2 Real-ear attenuation characteristics of the ear-muffs are measured in accordance with the subjective method specified in ISO 4869.
NOTE
a) Ear-plugs are covered in part II of the specification.
b) The standards referred to in this part of the specification are listed in appendix A.
c) Guidance on the verification of the quality of ear-muffs produced to this part of the specification is given in appendix B.