1. The energy value and the amount of nutrients referred to in Article 30(1) to (5) shall be expressed using the measurement units listed in Annex XV.
2. The energy value and the amount of nutrients referred to in Article 30(1) to (5) shall be expressed per 100 g or per 100 ml.
3. When provided, the declaration on vitamins and minerals shall, in addition to the form of expression referred to in paragraph 2, be expressed as a percentage of the reference intakes set out in point 1 of Part A of Annex XIII in relation to per 100 g or per 100 ml.
4. In addition to the form of expression referred to in paragraph 2 of this Article, the energy value and the amounts of nutrients referred to in Article 30(1), (3), (4) and (5) may be expressed, as appropriate, as a percentage of the reference intakes set out in Part B of Annex XIII in relation to per 100 g or per 100 ml.
5. Where information is provided pursuant to paragraph 4, the following additional statement shall be indicated in close proximity to it: 'Reference intake of an average adult (8 400 kJ/2 000 kcal)'.