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The 3M 7000052880 is a probed earplug designed exclusively for fit testing within the 3M E-A-Rfit Validation System. Each plug is modified with an integrated probe tube that allows the validation system to measure real-ear attenuation during a controlled test session. These are not hearing protection devices and must not be used as such. Safety officers, industrial hygienists, and occupational health professionals use this product to verify proper earplug fit for workers in noise-hazardous environments. The probed design ensures accurate sound-level readings at the ear canal during the fit-test protocol, supporting compliant hearing conservation programs.
This product is used in workplace hearing conservation programs across industrial, manufacturing, and construction environments. The test plugs are deployed during scheduled fit-testing sessions to confirm that workers achieve adequate attenuation with their standard hearing protection. They are handled by trained safety personnel or occupational health technicians who administer the 3M E-A-Rfit Validation System. Sold by the case with a minimum order quantity of one case, they are suited for high-volume testing programs that require consistent, repeatable results.
Designed for exclusive use with the 3M E-A-Rfit Validation System as a fit-testing accessory. Not compatible with other fit-test platforms as a direct replacement.
These plugs are administered by a qualified safety professional or occupational health technician following the 3M E-A-Rfit Validation System protocol. No tools are required for insertion, but proper fit-test procedures outlined in the validation system documentation must be followed. These plugs must never be substituted for standard hearing protection during noise exposure. Dispose of used test plugs in accordance with facility hygiene and waste policies.
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