- The fruit must be such that the juice of the berries has a refractometric index of at least:
- 12 °Brix for the Alphonse Lavallée, Cardinal and Victoria varieties,
- 13 °Brix for all other seeded varieties,
- 14 °Brix for all seedless varieties.
- In addition all varieties must have satisfactory sugar/acid ratio levels.
- Table grapes will not ripen further once picked.
- Objective methods to determine the refractometric index and the sugar/acid ratio are described in the Guidance on Objective Tests to Determine Quality of Fruit and Vegetables and Dry and Dried Produce.
