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About This Item

 

Full Description

Simple objective method, for determining the sound attenuation.

All current amendments available at time of purchase are included with the purchase of this document.
 

Document History

  1. BS EN ISO 4869-3:2007


    Acoustics. Hearing protectors-Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture

    • Most Recent
  2. BS EN 24869-3:1994


    Acoustics. Hearing protectors-Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes

    • Historical Version
  3. BS DD 192:1990

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    Method for measurement of insertion loss of ear-muff type hearing protectors (simplified method for quality inspection purposes)

    • Historical Version