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Code of Federal Regulations Title 42. Public Health § 42.84.122 Breathing resistance test;  minimum requirements

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) Resistance to airflow will be measured in the facepiece or mouthpiece of a gas mask mounted on a breathing machine both before and after each test conducted in accordance with §§ 84.124, 84.125, and 84.126, with air flowing at a continuous rate of 85 liters per minute.

(b) The maximum allowable resistance requirements for gas masks are as follows:

Maximum Resistance

[mm. water-column height]

Type of gas mask

Inhalation

Exhalation

Initial

Final1

Front-mounted or back-mounted (without particulate filter)

60

75

20

Front-mounted or back-mounted (with approved particulate filter)

70

85

20

Chin-style (without particulate filter)

40

55

20

Chin-style (with approved particulate filter)

65

80

20

Escape (without particulate filter)

60

75

20

Escape (with approved particulate filter)

70

85

20

1 Measured at end of the service life specified in Tables 5, 6, and 7 of this subpart.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 42. Public Health § 42.84.122 Breathing resistance test;  minimum requirements - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-42-public-health/cfr-sect-42-84-122/

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