Article 19. Qualifications of Arbitrator

No person shall serve as an arbitrator if he has any legal or financial interest in the outcome of the arbitration, provided, however, that the parties can appoint such person as an arbitrator notwithstanding their knowledge of disqualification by mutual agreement in writing.

Article 20. Appointment by Agreement of Parties

(1) If, in the agreement of the parties, mention is specifically made of the names of the arbitrators or the method of appointment thereof (inclusive of a presiding arbitrator who shall act as chairman, also inclusive thereof as provided in the following provisions), the arbitrator(s) shall be appointed in accordance therewith.
(2) If the arbitrators are to be appointed pursuant to the agreement of the parties provided in Paragraph (2) of Article 12, it shall be done in accordance with the following subparagraphs: