7 C.F.R. §§ 51.1176–51.1179

Any lot of oranges, the juice content of which meets the following requirements, may be designated “U.S. Grade AA Juice (Double A)”:

Any lot of oranges, the juice content of which meets the following requirements, may be designated “U.S. Grade A Juice”:

For determining the grade of juice, the maximum permissible anhydrous citric acid content in relation to corresponding total soluble solids in the fruit is set forth in the following Table II together with the minimum ratio of total soluble solids to anhydrous citric acid:

The juice used in the determining of solids, acids and juice content shall be extracted from representative samples as thoroughly as possible with a hand reamer or by such mechanical extractor or extractors as may be approved. The juice shall be strained through cheese cloth or other approved straining device of extra fine mesh to prevent passage of juice cells, pulp, or seeds.