The UN may require the vendors to provide samples and/or demonstrations of offered goods and/or services as part of the evaluation process. The solicitation documents shall specify that failure to provide the required samples/demonstrations shall render the submission non-compliant and will lead to its rejection.

Samples
The solicitation documents shall state that samples shall be provided by the invited vendors free of charge with no guarantee that they will be returned by the UN, unless the vendor agrees to take them back in "as-is" condition and pays for their return. The UN shall give no guarantee as to the condition of the samples upon completion of the designated tests and technical evaluation. If any sample is not returned, it shall become part of the regular UN inventory.