(a) The Institute shall issue approvals for the types of respirators described in subparts H through KK of this part which have met the minimum requirements set forth for such respirators in this part.
(b) In addition to the types of respirators specified in subparts H through L of this part, the Institute shall issue approvals for other respiratory protective devices not specifically described in this part subject to such additional requirements as may be imposed in accordance with Sec. 84.63(c). [60 FR 30355, June 8, 1995, as amended at 77 FR 14192, Mar. 8, 2012]