The test data was made on our Standard Noise Braker earplug.

The tests measured noise attenuation (reduction) at varying frequencies. Testing the frequencies is similar to comparing the noise reduction while you play the key of C at varying locations on a piano keyboard.

Our proprietary Hocks Noise Filter® is used in other products, and while attenuation data should be similar, the test data on this site is for Hocks Noise Braker® Standard earplugs only.

Sport Critt Loisirs

The European test was performed and provided by Sport Critt Loisirs, performed according to the European Union type inspection; compliant with Directive 89/686/EEC.