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3M™ E-A-Rfit™ Validation System

3M™ E-A-Rfit™ Validation System

The 3M™ E-A-Rfit™ Validation System makes it easy to measure every employee's unique level of protection and takes the guesswork out of managing compliance in your hearing conservation program.

3M™ E-A-Rfit™ Resources
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Technology that takes Hearing Conservation to the Next Level


1: What is the 3M™ E-A-Rfit™ Validation System?

E-A-Rfit is a service program designed to help validate hearing protection and compliance. It delivers an objective, quantitative measurement of each employee's protection, so you can better protect your workforce while helping employees understand the importance of proper fit.With the E-A-Rfit validation system, your employees will learn how to properly insert their 3M earplug, and you'll have the confidence that they are wearing the right earplug for their environment.

  • It is Fast, quantitative and objective
  • Personal Attenuation Rating (PAR) of hearing protectors
  • Offers training for consistent fit
  • Provides documentation for compliance reporting


E-A-Rfit Validation Services

3 Simple Steps

Step 1: Workers self-fit their own plugs
In less than 8 seconds per ear, the system generates a personal attenuation rating (PAR) that indicates a worker's noise reduction levels for a given fitting

Advantage: Reflects an individual's fitting methods and indicates if additional training is necessary.

Step 2: Connect to the Unique dual-element microphone
The microphone measures the noise reduction of each earplug as worn by the worker across the wide range of industrial noise frequencies.

Advantage: Objectively tests 7 frequencies (125 Hz - 8 kHz) in under 8 seconds per ear, so you don't rely on subjective test responses.

Step 3: Run the Test for Personal Attenuation Rating (PAR)
Patented system and proprietary algorithms quickly analyze real-ear data to provide Personal Attenuation Rating (PAR) and fit variability.

Advantage: PARs can assist in determining if the level of hearing protection your workers are getting is appropriate to their work environment.

Documented Results: Easy-to-understand test results are documented for each test subject, both in print and electronic formats, for future reference.


Audit, Fit, Assess

Look how well the 3M™ E-A-Rfit™ Validation System fits into your hearing conservation program. Integrating hearing protection fit testing into your hearing conservation program benefits everyone from new hires to high-risk workers.


  • Establish baseline values for new workers
  • Helps identify workers receiving inadequate protection that leaves them at risk of threshold shifts
  • Validate high protection levels required by workers in high noise areas

Fit, Train & Motivate

  • Provides tool for training proper insertion techniques and to assess proficiency
  • Motivates employees by helping them realize the control they have in protecting their hearing

Assess & Manage

  • Improves long term performance of your hearing conservation program
  • Indicates employees needing further fit training or alternative hearing protectors
  • Input your noise exposure data and the 3M™ E-A-Rfit™ Software can help you identify the most appropriate hearing protector(s) and help minimize over/under protection


Documents, Tech Support, Software

Training Videos

Training Modules

3M is pleased to introduce a dynamic, new online training program to guide users of its 3M™ E-A-Rfit™ Validation System through the process of system set-up, data entry, earplug attenuation testing, and reporting.

The training consists of 7 modules and you can view them and listen to them at your leisure.

Part 1: Introduction
Part 2: Set up
Part 3: Visit creation
Part 4: Product selection
Part 5: Fitting earplugs
Part 6: Attenuation testing
Part 7: Results and reports

For any questions or for more details of 3M™ E-A-Rfit™ Validation System, please contact us.


Optimal Fit

EARFit Video

E-A-Rfit™ Validation Overview

The 3M™ E-A-Rfit™ Validation System assists in achieving optimal fit through hearing protector selection and employee training. In less than 10 seconds per ear, the system generates a personal attenuation rating (PAR).

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Featured Demo

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This in-the-ear testing procedure differs from many other systems on the market by providing quantitative data that does not rely on subject response. Fit, train, and motivate every worker using their Personal Attenuation Rating (PAR).

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Need Help?

If you have questions or want more information, please contact us.

Where to buy 3M PPE Safety Products. Pricing is available from your local 3M authorized safety distributor.



Hearing Loss Prevention Seminar

Nashville, TN

Date of Event: April 28, 2015
Details | Register


AIHce 2015

Salt Lake City, UT

Date of Event: May 30, 2015 - June 4, 2015

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