Hearing Protection Product Testing

Hearing protection product testing

Michael & Associates

Gateway Safety Hearing Protection products are independently tested by Michael & Associates, a psychoacoustics laboratory accredited by the National Institute of Standards and Technology (NIST) National Voluntary Laboratory Accreditation Program (NVLAP) for tests performed according to ANSI S3.19-1974, ANSI S12.6-2008 and AS/NZ S1270:2002. 

ansi logo

These products have been independently tested to the below Noise Reduction Ratings (NRRs) in an accredited NVLAP-certified facility according to ANSI S3.19-1974. 

This product has been independently tested to a 31 NRR.


This product has been independently tested to a 30 NRR.


This product has been independently tested to a 28 NRR (cap-mount version).


These products have been independently tested to a 26 NRR. (Cap-mount version)


These products have been independently tested to a 25 NRR.