What is the Personal Attenuation Rating (PAR)?
Personal Attenuation Rating (PAR) is a measure of hearing protector attenuation for each worker as determined by Individual Fit Testing. Individual Fit Testing is conducted for each employee using his/her own hearing protector as normally worn. OSHA, NIOSH and many professional organizations have long recognized that the laboratory-derived NRR is not a good predictor of actual hearing protector performance in the real world. Individual Fit Testing is now a recommended best practice for hearing conservation programs.
- I've seen headsets and hearing protectors advertised as "OSHA approved" - what does this mean?
- My job can be boring. Is it OK if I listen to music headphones while I'm working?
- What is the Noise Reduction Rating?
- Why do OSHA formulas require us to subtract 7 dB from the Noise Reduction Rating (NRR)?
- Does OSHA require companies to divide the Noise Reduction Rating (NRR or NRR-7) in half?