Only one organisation per country can become a member
ISO aims to facilitate the coordination and unification of standards issued by national standards bodies and provides for a continuous exchange of information on countries' standardization work. Membership is open to any national standards organization, provided that it meets the conditions for admission and is prepared to accept the statutes and implementing regulations. From each individual country, the organization that most comprehensively represents the standardizing bodies of that country is to become a member. The official languages of ISO adopted in London are English, French and Russian. The headquarters of the ISO are to be in Geneva, where the ISO commences its activities in February 1947.
The London Conference designates Geneva as the headquarters of the ISO. The Geneva office is established, and on February 23, 1947, the ISO begins its activities.