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Features and Benefits:
Comfortable
Soft PU foam material for low pressure inside the ear Slow rebound allows fully attach to ear canal

Convenient
Dispenser available (ED-250, ED-500)
Nylon cord or PVC cord helps prevent earplugs loss

Compatible with
Designed to be compatible with earmuff or other PPE 

Frequency (Hz) 125 250 500 1000 2000 4000 8000
Sound attenuation MI [dB] 31.7 31.5 35.5 37.3 36.7 43.2 45.0
Standard deviation Sr [dB] 3.6 4.4 4.2 4.1 4.1 4.0 3.0
APV Mf-Sf (dB) 28.1 27.1 31.2 33.2 32.6 39.2 42.0

 

SNR=35dB H=35dB M=33dB L=30dB
SNR.=38.2d8 Hm=38.3dB M==36.2dB Ln=33.7dB
SNR2=2.9dB Hy=3.4dB Mr=3.2dB L=3.4dB

 

EN 352-2:2020 SNR 34dB

ANSI S3. 19-1974 Noise Reduction Rate
NRR 28dB