D.C. Mun. Regs. tit. 30, § 2206
2206.1 If the bidder is required to furnish bid samples, this requirement shall be stated in the IFB.
2206.2 The contracting officer shall not require bidders to furnish bid samples unless the characteristics of the product cannot be described adequately in the specifications or purchase description.
2206.3 Bid samples shall be used only to determine the responsiveness of the bid and shall not be used to determine a bidder's ability to produce the required items.
2206.4 The contracting officer shall reject a bid as nonresponsive if the sample fails to conform to each characteristic listed in the IFB.
SOURCE: Final Rulemaking published at 36 DCR 6681, 6719 (September 22, 1989),