Noise Reduction Ratings

April 23, 2014

Decibels (db) are a measurement of environmental noise. This chart from the United States Department of Labor showcases a spectrum of sounds and their decibel levels.

When looking into hearing protection devices, you will see the acronym: "NRR." The noise reduction rating (NRR) refers to the amount of sound (dB) reduction a hearing protection device provides when worn properly.

The higher the NRR number, the more hearing protection. For example, a pair of NRR: 30 rated earplugs would provide more auditory protection than a NRR: 27 rated pair of earplugs.

OSHA standards require the use of ear protection for employees that are exposed to noise at or above 85 dB for an 8 hour weighted average.

 

 

 

Shop hearing protection and protect your ears.

Recent posts

Ingredients

June 11, 2026

A Guide to Peppers: How Food Manufacturers Can Bring Out Flavor Behind the Heat

Consumers are chasing authentic pepper flavors that offer depth, not just a sting. Cheese is the perfect...

Food Safety

June 11, 2026

One Analyzer, Endless Possibilities: Streamlining Testing for Diverse Portfolios

Consumer demand for diverse dairy products is growing rapidly. Managing quality control for a wide varie...

Processing & Flow Control

June 10, 2026

Proactive Maintenance, Minimal Downtime: Access Alfa Laval Training

With the high cost of unexpected downtime in food manufacturing, implementing a preventive maintenance s...

Related resources