4. Compliance with the requirements set out in paragraphs 1 and 2 of this Article shall be demonstrated in the technical documentation referred to in Annex VII, which shall contain the following elements:
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(a)
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an explanation of the technical specifications, standards and conditions used to assess the packaging against the performance criteria and methodology set out in Annex IV;
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(b)
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for each of those performance criteria, the identification of the design requirements which prevent further reduction of the packaging weight or volume;
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(c)
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any test results, studies or other relevant sources, such as modelling and simulations, used to assess the minimum necessary volume or weight of the packaging.
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For reusable packaging, the assessment of compliance with the requirements set out in paragraph 1 of this Article shall take into account the characteristics of reusable packaging, and in the first place the requirements set out in Article 11.