EAR MUFF 85 DB
Non-returnable
The Noise Reduction Rating (NRR) is a crucial factor to consider when selecting ear muffs for hearing protection.
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What Is Noise Reduction Rating (NRR)?
- The NRR indicates an ear protection device’s ability to reduce external noise reaching the user’s ears.
- It serves as the official standard for attenuation in the USA and helps buyers choose suitable hearing protection devices (HPDs).
- An HPD with an NRR of 31, for instance, can ideally reduce noise by 31 decibels (dB) in controlled lab conditions.
How Much Noise Reduction Do You Need?
- First, determine how much noise reduction you require.
- According to the U.S. CDC:
- Approximately 22 million Americans are exposed to hazardous workplace noise annually.
- One in three Americans experiences noise levels above 70 dB.
- Here are the recommended thresholds for excessive noise exposure:
- 8 hours: Maximum permissible noise level is 85 dBA (NIOSH REL) or 90 dBA (OSHA PEL).
- 4 hours: Maximum permissible noise level is 88 dBA (NIOSH REL) or 95 dBA (OSHA PEL).
- 2 hours: Maximum permissible noise level is 91 dBA (NIOSH REL) or 100 dBA (OSHA PEL).
- 1 hour: Maximum permissible noise level is 94 dBA (NIOSH REL) or 105 dBA (OSHA PEL).
- 30 minutes: Maximum permissible noise level is 97 dBA (NIOSH REL) or 110 dBA (OSHA PEL).
- 15 minutes: Maximum permissible noise level is 100 dBA (NIOSH REL) or 115 dBA (OSHA PEL).
Choosing Ear Muffs:
- To protect your hearing effectively, look for ear muffs with an attenuation rating of at least 25 dB (100 – 85 = 25).
- An ear muff with a dB rating of 85 dB (A) or lower is considered good for hearing protection.
