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  • 3M™ E-A-RTONE™ Insert Earphone 3A Replacement Sound Tubes 420-2003, 4 EA/Case
  • 3M™ E-A-RTONE™ Insert Earphone 3A Replacement Sound Tubes 420-2003, 4 EA/Case

    3M Product Number 420-20033M ID 70071615895UPC 10080529510126
    • 3M PSD products are for occupational use only.
    • *The NRR may overestimate the hearing protection provided during typical use.
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    Specifications
    Attribute Name
    Value
    Brand
    E-A-R™
    Case Quantity
    4
    Hearing Protection Style
    Probed for Fit Testing
    Product Series
    E-A-RTONE
    Product Type
    Insert Earphone
    Details
    • 3M PSD products are for occupational use only.
    • *The NRR may overestimate the hearing protection provided during typical use.

    This E-A-RTONE™ 3A Insert Earphone accessory is a clear, polyurethane 9.85" replacement sound ("front") tube for all standard E-A-RTONE™ 3A Insert Earphone models.

    By directly coupling to the test subject's ear canal, via disposable foam E-A-RLINK™ eartips, the E-A-RTONE™ 3A Insert Earphone for audiometric testing provides both performance and reliability advantages over traditional supra aural earphones. Benefits (in comparison to supra aural/TD H style earphones) include;
    Improved ambient noise attenuation
    Greater interaural attenuation
    Facilitated infection control (via disposable eartips)
    Elimination of collapsed canal artifact
    Better Test/Retest Reliability
    Reduced Occlusion Effect for BC testing

    This E A RTONE™ 3A Insert Earphone accessory is a clear, polyurethane 9.85" replacement sound ("front") tube for all standard E A RTONE™ 3A Insert Earphone models. Front tube replacement is recommended on an annual basis or as required.

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