Earplugs, Soft Foam, NRR 32, Value Pack
Noise Reduction Rating: 32 decibels (When used as directed). The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (Higher numbers denote greater effectiveness). Better Living Brands LLC, Pleasanton, CA 94566 No. 5002. Federal law prohibits removal of label prior to purchase. EPA label required by U.S. E.P.A. Regulation 40 CFR Part 211, Subpart B. Tested according to ANSI Specs S3.19-1974 The level of noise entering a person's ear, when hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR. Example: 1. The environmental noise level as measured at the ear is 92 decibels db(A). 2. The NRR is 32 decibels (db). 3. The level of the noise entering the ear is approximately 60 db(A). Attenuation Chart (ANSI S3.19-1974): Frequency: 125; Mean Attenuation (dB): 38.4; Standard Deviation (dB): 2.9. Frequency: 250; Mean Attenuation (dB): 40.3; Standard Deviation (dB): 3.5. Frequency: 500; Mean Attenuation (dB): 43.2; Standard Deviation (dB): 4.0. Frequency: 1000; Mean Attenuation (dB): 41.8; Standard Deviation (dB): 3.8. Frequency: 2000; Mean Attenuation (dB): 38.6; Standard Deviation (dB): 2.6. Frequency: 3150; Mean Attenuation (dB): 45.0; Standard Deviation (dB): 2.8. Frequency: 4000; Mean Attenuation (dB): 45.7; Standard Deviation (dB): 3.5. Frequency: 6300; Mean Attenuation (dB): 49.6; Standard Deviation (dB): 3.8. Frequency: 8000; Mean Attenuation (dB): 47.3; Standard Deviation (dB): 4.3. Quality gauranteed. Love it or it's on us (1-888-723-3929). how2recycle.info. Scan for more information. Made in Mexico.