F1The Authority shall ensure that inspections and other control measures, as appropriate, are carried out to ensure compliance with this Regulation.

Where necessary and at the request of the F2appropriate authority, the Authority shall assist in developing technical guidance on sampling and testing to facilitate a coordinated approach for the implementation of paragraph 1.

The appropriate authority may, taking account of available scientific evidence, supplement this Regulation by prescribing quality criteria for validated analytical methods referred to in point 4 of Annex 2, including substances to be measured.