TPR EARPLUGS :
The earplug is made from soft TPR and has following features:
Frequency HZ | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
Mean Attenuation DB | 25.1 | 25.3 | 24.6 | 26.8 | 26.4 | 30.1 | 36.1 | 40.4 |
Standard Deviation DB | 4.1 | 4.5 | 4.9 | 3.4 | 3.3 | 4.3 | 3.5 | 6.1 |
SNR= 27dB ; H= 27dB, M= 24dB, L= 22dB |
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