# Air-Purifying Respirator — Respirator assigned protection factors — federal OSHA and Cal/OSHA, with maximum use concentrations

For Air-Purifying Respirator, facepiece is Quarter mask; assigned protection factor is 5; jurisdiction is Title 8, Section 5144, recorded from its source on 2026-08-10.

- **Respirator type:** Air-Purifying Respirator _(verified: appears in the quote below)_
- **Facepiece:** Quarter mask _(our reading, not quoted from the source)_
- **Assigned protection factor:** 5 _(verified: appears in the quote below)_
- **Jurisdiction:** Title 8, Section 5144 _(our reading, not quoted from the source)_

## What the source says

> Loose- | | Quarter | | Full | | fitting | Type of respirator 1,2 | mask | Half mask | facepiece | Helmet/hood | facepiece | 1. Air-Purifying Respirator | 5 | 3 10 | 50 | ...... | ...... |

## Source

- https://www.dir.ca.gov/title8/5144.html

Last verified: 2026-08-10. Review by: 2028-08-09.
Part of [Respirator assigned protection factors — federal OSHA and Cal/OSHA, with maximum use concentrations](https://referencesource.org/respirator-assigned-protection-factors/).