Brix (° Bx symbol) is a numerical scale that measures the amount of soluble solids (basically understood as sugar or sucrose) in a fruit, in sugar cane, in fruit juice, in cherry tomatoes, etc. To put it even more simply, the Brix degree can be considered the degree of sweetness of a fruit or a liquid. This index is used to measure the quality of a large number of fruits, tomatoes, sugar cane. The higher the Brix grade, the greater the sweetness and quality. Just to get a sense of the importance of Brix, in the sugar industry you pay more for cane than having a higher Brix.

In the particular case of grapes, a minimum of 14 ° Bx is considered for table grapes.

In the case of Special APPC Grapes the minimum Brix are as follows:

- Beni Izu Grape = 16 ° Bx - Fuji Midori Grape = 16 ° Bx - Pilar Moscato Grape = 18 ° Bx

These values are measured using a device called a refractometer.