A justification and approval is required to use proprietary specifications and standards -
(1) When using sealed bidding or negotiated acquisition procedures (see 206.302-1(S-70) for justification requirements); or,
(2) When using the simplified procedures for certain commercial items at FAR 13.5 (see 213.501(a)(ii) for justification requirements).
[84 FR 25192, May 31, 2019]