This low attenuating metal detectable earplug is ideal for use in the food manufacturing industry or where contamination needs to be considered.The 3M E-A-R Tracer 20 earplug contains a non ferrous filter and has a fully metalised detectable cord in non-food blue, it is also moisture resistant, reusable and comes with a cord.Attenuation:SNR=20dB, H=25dB, M=17dB, L=10dB
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Data Sheet