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§ 84.310 Post-approval testing.
(a) NIOSH will periodically test the capacity and performance of units of approved CCERs.
(b) NIOSH may test units that are new and/or units that have been deployed in the field and have remaining service life.
(c) NIOSH will conduct such testing pursuant to the methods specified in §§ 84.303 through 84.305, except as provided under paragraphs (c)(1) and (2) of this section: