1 . ACTION FOR DECLARATION OF NULLITY - NATURAL AND LEGAL PERSONS - MEASURES OF DIRECT AND INDIVIDUAL CONCERN TO THEM - COMMISSION DECISION DECLARING THAT THE IMPORTATION OF ARTICLES MAY NOT TAKE PLACE FREE OF COMMON CUSTOMS TARIFF DUTIES - DECISION NOTIFIED TO THE MEMBER STATES - DECISION OF INDIVIDUAL CONCERN TO THE IMPORTER - CONDITIONS ( EEC TREATY , ART . 173 , SECOND PARA .) 2 . MEASURES ADOPTED BY THE INSTITUTIONS - STATEMENT OF REASONS - DUTY - OBJECT - SCOPE ( EEC TREATY , ART . 190 ) 3 . ACTION FOR DECLARATION OF NULLITY - REVIEW BY THE COURT - LIMITS - COMMISSION DECISION DECLARING THAT THE IMPORTATION OF ARTICLES MAY NOT TAKE PLACE FREE OF COMMON CUSTOMS TARIFF DUTIES - ARTICLES OF A SCIENTIFIC NATURE - REVIEW OF THE APPLICATION OF THE CRITERIA USED BY THE COMMISSION ( EEC TREATY , ART . 173 ) 4 . COMMON CUSTOMS TARIFF - IMPORTATION FREE OF CUSTOMS DUTIES - ARTICLES OF A SCIENTIFIC NATURE - APPRAISAL OF THE MAIN USE OF THE APPARATUS IN QUESTION - CRITERIA ( COMMISSION REGULATION NO 2784/79 , ART . 5 )