Attenuation of Workplace Ear Plugs

 

Class A Solid: Attenuation Data

NRR: 26dB
Average Attenuation: 38.6dB
Frequency (Hz)125250500100020003150400063008000
Mean Attenuation (dB)33.828.832.431.938.943.544.747.845.9

 

Class B Filtered: Attenuation Data

NRR: 21dB
Average Attenuation: 34.6dB
Frequency (Hz)125250500100020003150400063008000
Mean Attenuation (dB)25.825.329.527.336.039.541.044.842.0

 

Class C Filtered: Attenuation Data

NRR: 15dB
Average Attenuation: 23.9dB
Frequency (Hz)125250500100020003150400063008000
Mean Attenuation (dB)11.612.216.420.630.936.136.830.719.6

 

Comparison Chart

Workplace Earplugs Attenuation Comparison Chart