§ 211.203 Definitions.

(a) As used in subpart B, all terms not defined here have the meaning given them in the Act or in subpart A of Part 211.

(b) ANSI Z24.22–1957. A measurement procedure published by the American National Standards Institute (ANSI) for obtaining hearing protector attenuation values at nine of the one-third octave band center frequencies by using pure tone stimuli presented to ten different test subjects under anechoic conditions.

(c) ANSI S3.19–1974. A revision of the ANSI Z24.22–1957 measurement procedure using one-third octave band stimuli presented under diffuse (reverberant) acoustic field conditions.

(d) Carrying Case. The container used to store reusable hearing protectors.

(e) Category. A group of hearing protectors which are identical in all aspects to the parameters listed in § 211.210–2(c).

(f) Claim. An assertion made by a manufacturer regarding the effectiveness of his product.

(g) Custom-molded device. A hearing protective device that is made to conform to a specific ear canal. This is usually accomplished by using a moldable compound to obtain an impression of the ear and ear canal. The compound is subsequently permanently hardened to retain this shape.