Tag Archives: Hearing Protection Devices

NRR stands for “Not Really Realistic”

In the United States, hearing protection devices such as earplugs and earmuffs require a Noise Reduction Rating (NRR) to be listed directly on product packaging. The NRR is a dB value reflecting the level of attenuation a hearing protection product provides as evaluated under laboratory … Continue reading

Posted in Hearing Conservation | Tagged , , , , , , , | 5 Comments