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Fitting E • A • R TM Foam Earplugs

Fitting E • A • R TM Foam Earplugs. E. H. Berger Division Scientist, Occupational Health & Environmental Safety Division. ¹. Fitting E • A • R Foam Earplugs. References: AIHA Noise Manual , Ch. 10, p. 398-412 EARLog #19 Tips & Tools for Fitting E-A-R Foam Earplugs.

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Fitting E • A • R TM Foam Earplugs

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  1. Fitting E•A•RTMFoam Earplugs E. H. Berger Division Scientist, Occupational Health & Environmental Safety Division

  2. ¹ Fitting E•A•R Foam Earplugs References: AIHA Noise Manual, Ch. 10, p. 398-412 EARLog #19 Tips & Tools for Fitting E-A-R Foam Earplugs

  3. Otoscopic Inspection • Examine around ear and in earcanal • How to brace otoscope • Proper pinna pull and direction to insert tip • Earlight is excellent alternative • Need only examine to earplug depth

  4. 0.2 cm3 300 cm3 Occluded Volume The Occlusion Effect as a Fitting Aid • Listen to OE using finger • “Boom beat” • Fit one ear and listen • Fit both ears and listen • Works for earmuffs too Occlusion Effect (dB)

  5. Foam Earplugs: Make them be all that they can be!

  6. The Inadequate Roll Down

  7. Rolling and Inserting Foam Earplugs • Tight compression (EXTREMELY TIGHT!)and crease- and wrinkle-free • Practice with Roll Model • Instructor fits off-hand ear • Guide direction ofpinna pull • Student fits other ear

  8. Checking the Fit of Foam Earplugs • Occlusion effect - present, but not too much • Position relative to tragus • Remove and “read” plugs • “Crummy earmuff” test

  9. Considerations re Deep Fitting • Give the plug a chance to expand - it gets more comfortable as it expands and shortens • Alternative options to facilitate removal of overly deep fittings • Golf tee • Longer plug • Corded plugs • Tweezers

  10. Less OE More OE Three Advantages of a Better Fit • More and flatter attenuation (listen in noise) • Less occlusion effect (provide demonstration) • Better comfort

  11. Use of an Eargage to Size Canals • Approximate sizing • Provides indicator for beginner • Useful for 2-sized foam earplugs

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