42 C.F.R. § 84.203 Breathing resistance test; minimum requirements.
Title 42 - Public Health
(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:
Title 42: Public Health
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
Subpart L—Chemical Cartridge Respirators
§ 84.203 Breathing resistance test; minimum requirements.
Maximum Resistance [Millimeter water column height]------------------------------------------------------------------------ Inhalation Type of chemical-cartridge -------------------------- Exhalation respirator Initial Final\1\------------------------------------------------------------------------Other than single-use vinyl chloride respirators: For gases, vapors, or gases 40 45 20 and vapors.................. For gases, vapors, or gases 50 70 20 and vapors, and particulatesSingle-use respirator with valves: For vinyl chloride........... 20 25 20 For vinyl chloride and 30 45 2 particulates................Single-use respirator without valves: For vinyl chloride........... 15 20 (\2\) For vinyl chloride and 25 40 (\2\) particulates................------------------------------------------------------------------------\1\ Measured at end of service life specified in Table 11 of this subpart.\2\ Same as inhalation.
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