11.— (1) A national authority may appoint such and so many persons as it considers appropriate to be inspectors for the purposes of the enforcement of all or any of the relevant chemicals statutory provisions within its relevant area of responsibility in accordance with section 8.

(2) An inspector appointed under this section shall be furnished with a certificate of his or her appointment as an inspector by that national authority.

(3) When exercising a power conferred on him or her by this section, an inspector shall, if requested by a person affected, produce the certificate of his or her appointment or a copy of it to that person and a form of personal identification.

(4) An appointment under this section shall cease when the national authority that made the appointment revokes the appointment.