SECTION 43

(1) Tenders shall be sent in a stamped and sealed envelope bearing the number and purpose of the invitation to tender. They shall bear neither a distinctive mark nor any clue as to the identity of the tenderer, otherwise they shall be rejected. (2) In the case of contracts for studies, the technical and financial offers shall be put in two different sealed envelopes and submitted in a stamped and sealed outer envelope under the same conditions as stated above. (3) The envelopes containing the tenders shall be submitted against acknowledgement of receipt at the place indicated in the tender notice. (4) Upon receipt, the envelopes shall be assigned a number, marked with the date and time of submission, and entered by order of arrival in a special register issued by the body in charge of the regulation of public contracts. These envelopes shall remain sealed until the moment provided for their opening by the Internal Tenders Board. (5) Only envelopes received under the conditions set out in (1), (2), (3), and (4) above may be opened. (6) The tender-opening session shall start not later than 1 (one) hour after the deadline for the submission of tenders as specified in the tender file. (7) Tenders arriving after the deadline for submission shall be inadmissible. (8) The envelopes containing the tenders shall be opened by the Internal Tenders Board. (9) The tender-opening session shall be public. It may be attended by tenderers who have submitted their tenders.