IEC 62703:2013 specifies the general aspects in the terminology and definitions related to the performance of fluorometric oxygen analyzers used for the continuous determination of dissolved oxygen partial pressure or concentration in liquid media; unifies methods used in making and verifying statements on the functional performance of such analyzers; specifies which tests should be performed in order to determine the functional performance and how such tests should be carried out and provides basic documents to support the application of standards of quality assurance within ISO 9001.