The purpose of this information is to provide training and software resources for users of the system.
The 3M™ E-A-Rfit™ Dual-Ear Validation System allows you to identify the amount of protection that a worker is receiving from their hearing protector. For more information, see the Getting Started section below.
List of test plugs for North America (PDF, 129 KB)
If you are looking for support for the 3M™ E-A-Rfit™ Validation System Version 4, click here.
In order to use the 3M™ E-A-Rfit™ Dual-Ear Validation System to measure hearing protector attenuation, you will need to
Software & Training Resources
Most messages are answered within two business days or less; however, some replies require further investigation or clarification.
If you need technical assistance by telephone, please call 1-800-243-4630 then select menu options 1-2-5.
3M™ E-A-Rfit™ Repair Service Guide (PDF, 28 KB)
If you wish to request service and/or repair of your 3M™ E-A-Rfit™ Equipment, please contact 3M Detection Calibration and Repair at 1-800-245-0779, ext. 5 to reach our Repair and Calibration Department.
Outside US Customers:
Please contact your local 3M Technical Service person to coordinate the service or repair.