---
kind: "section"
citation: "42 C.F.R. § 84.177"
title: "42"
number: "84.177"
heading: "Total noise level test—PAPR classes HE and PAPR100."
url: "https://uscodex.org/cfr/42/84.177"
---

# §84.177. Total noise level test—PAPR classes HE and PAPR100.


Noise levels generated by any powered air-purifying respirators that cover the ears (i.e., hood or helmet) will be measured at the entrance to each ear at maximum airflow obtainable and must not exceed 80 dBA.


## Notes

### Source

Source: 85 FR 20608, Apr. 14, 2002, unless otherwise noted.

### Authority

Authority: 29 U.S.C. 651 et seq.; 30 U.S.C. 3, 5, 7, 811, 842(h), 844.

### Source

Source: 60 FR 30355, June 8, 1995, unless otherwise noted.