42 C.F.R. § 84.203

Current through October 31, 2024
Section 84.203 - Breathing resistance test; minimum requirements
(a) Resistance to airflow will be measured in the facepiece, mouthpiece, hood, or helmet of a chemical cartridge respirator mounted on a test fixture with air flowing at a continuous rate of 85 liters per minute, both before and after each test conducted in accordance with §§ 84.206 through 84.207 .
(b) The maximum allowable resistance requirements for chemical cartridge respirators are as follows:

Maximum Resistance

[Millimeter water column height]

Type of chemical-cartridge respiratorInhalationExhalation
InitialFinal1
Other than single-use vinyl chloride respirators:
For gases, vapors, or gases and vapors404520
For gases, vapors, or gases and vapors, and particulates507020
Single-use respirator with valves:
For vinyl chloride202520
For vinyl chloride and particulates30452
Single-use respirator without valves:
For vinyl chloride1520(2)
For vinyl chloride and particulates2540(2)

1 Measured at end of service life specified in Table 11 of this subpart.

2 Same as inhalation.

42 C.F.R. §84.203