3M™ E-A-Rfit™ Dual-Ear Validation System

The new ANSI/ASA S12.71-2018 standard for hearing protection fit test systems is here and the 3M™ E-A-Rfit™ Dual-Ear Validation Fit-Test System is now compliant!

OSHA has recommended fit testing as a best practice in hearing conservation since 2008. ANSI/ASA recently published the first standard setting the criteria that fit-test systems should meet to help ensure accurate measurements and transparent reporting of fit-test results. This new standard is titled ANSI/ASA S12.71-2018, American National Standard Performance Criteria for Systems that Estimate the Attenuation of Passive Hearing Protectors for Individual Users.

Get results you can trust

Learn more about the 3M™ E-A-Rfit™ Dual-Ear Validation System:

- Download the FAQ about our compliance with ANSI/ASA S12.71-2018.

- Explore the beneftis of fit testing explained in our new eBook.



Fit Testing Videos

  • EARfit Video
    Hearing Protection Fit Testing
  • How the EARfit Dual-ear system can help
    Why Fit Test?

What is Hearing Protection Fit Testing?

  • Man taking a hearing protection fit test

    Hearing protector fit testing is a way to measure the amount of noise reduction, or attenuation, a hearing protector provides while it is being worn by a specific individual. This real-world measurement is referred to as a “Personal Attenuation Rating” or PAR.

    3M recommends workers fit test their hearing protectors. So, like respirators, the worker can better understand the level of protection they can achieve with a properly fitted hearing protector.

    Download the technical bulletin to learn more about fit testing, see some benefits other companies have realized, and learn why OHSA and NIOSH say it's a best practice.


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In a 2014 study, nearly 30% of employees in an OSHA-compliant hearing conservation program were not receiving adequate attenuation for their workplace noise exposures.
Smith, et. al

Standards & Regulations

  • Standards and Regulations Image

    OSHA has acknowledged that hearing protection fit testing is a best practice in hearing conservation for over a decade (OSHA/NIOSH/NHCA, 2008).

    OSHA has stated that fit testing can be used to help meet the requirements for training and for ensuring proper initial fit and correct use of hearing protectors. (OSHA, 2016).


3M™ E-A-Rfit™ Dual-Ear Validation System

The 3M™ E-A-Rfit™ Dual-Ear Validation System makes it easy to measure every employee's unique level of attenuation through hearing protection fit testing and helps take the guesswork out of managing compliance in your hearing conservation program.


Support and Resources

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    Technical Support:
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    Technical Support:
    1-800-665-2942 Option 1

    Monday - Friday
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