Howard Leight Details NRR Changes

September 28, 2010

In anticipation of the EPA's expected change to the Noise Reduction Rating (NRR), Howard Leight has issued a brochure that explains known details of the proposed changes for hearing protectors.

Under the expected regulation a new rating system will be used, still known as the NRR, that will now reflect a range of expected protection, instead of a single-number estimate. The lower number of the range will indicate how much attenuation minimally trained users can expect, while the higher number will indicate how much attenuation highly motivated, trained users can expect to achieve.

The brochure is designed as an information resource for safety managers, and also provides perspective for Hearing Conservation program managers and other safety professionals on steps they can take now, including the use of Howard Leight's VeriPRO™ fit testing system. VeriPRO can determine the Personal Attenuation Rating (PAR) of an earplug's fit, and identify if employees are receiving optimal protection, require additional training on how to fit their earplug, or need to try a different model.

Titled, "Inside the EPA's Proposed Change to the Noise Reduction Rating," copies of the brochure are available through the company website at