§211.207. Computation of the noise reduction rating (NRR). — Inbound Citations
40 C.F.R. § 211.207
Statutory Authority
Cited by 2 regulations in release Current.
Citations to 40 U.S.C. § 211.207 as a whole
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(1) Area B must state the value of the Noise Reduction Rating (NRR) in decibels for that model hearing protector. The value stated on the label must be no greater than the NRR value determined by using the computation method of § 211.207 of this subpart.
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(b) Manufacturers who distribute protectors in commerce to another manufacturer for packaging for ultimate purchase or use must provide to that manufacturer the mean attenuation values and standard deviations at each of the one-third octave band center frequencies as determined by the test procedure in § 211.206. He must also provide the Noise Reduction Rating calculated according to § 211.207.