3M is committed to reducing workplace exposure to hazardous noise with its E-A-Rfit Validation System, a quantitative hearing protector fit test. The system features a new software upgrade, an expanded portfolio of probed earplugs for testing and easy-to-use training materials.
The E-A-Rfit Validation System assists in achieving optimal fit through hearing protector selection and employee training. In fewer than 8 seconds per ear, the system generates a personal attenuation rating that indicates a worker’s noise reduction for a given fitting and hearing protector.
Unlike other systems that rely on subjective responses to test signals, the 3M in-the-ear testing procedure leverages proprietary algorithms to analyze sound levels in the ear when the earplugs are worn. This helps reduce test variability related to background noise in the test room and any existing hearing loss of the workers being tested.
A performance outcome screen then displays the personal attenuation rating along with a pass/fail indication for the worker’s noise exposure level. The system helps ensure proper use of the devices and identifies the earplug models offering the best protection.