The chart above is a representation of a study completed in Nth America by Auditory Research Scientist, Elliot Berger. It indicates the difference between laboratory protection level (orange) and the protection level obtained by measurement of people wearing the same product in their work place. (Grey). It also indicates the importance of the measurement of each individual's protection level in the real world.
Sonomax has solved this problem by measuring every individual's protection level, for each ear, at the time of fitting.
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