1.Member States shall require that packages of basic and certified seed, not made up in the form of EC small packages, be sealed officially or under official supervision in such a manner that they cannot be opened without damaging the sealing system or leaving evidence of tampering on either the official label provided for in Article 28(1) or the package.In order to ensure sealing, the sealing system shall comprise at least either the official label or the affixing of an official seal.The measures provided for in the second subparagraph shall not be necessary where a non-reusable sealing system is used.In accordance with the procedure referred to in Article 46(2) it may be established whether a particular sealing system complies with the provisions of this paragraph.