Real-time measurement of background sound pressure levels in an audiometric testing environment to confirm that noise does not exceed OSHA Maximum Permissible Ambient Noise Levels (MPANLs). Required when testing outside a traditional sound booth. Ambient noise records must be maintained as part of the audiometric record. (29 CFR 1910.95 Appendix D)
SHOEBOX: SHOEBOX PureTest performs an automated room scan before each session using an external Class 2 microphone, measuring against OSHA Appendix D limits.
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