Ascorbate (vitamin C) concentrations and osmolalities (solute concentrations) were measured across orange and apple juice varieties available at a local grocer. Ascorbate concentrations ranged from 0.00 to 0.55 mg mL^-1 in apple juice and from 0.22 to 0.54 mg mL^-1 in orange juice. Mean ascorbate concentrations were significantly higher in orange juices compared to apple juices. In contrast, the mean osmolality of apple juices was significantly greater than in orange juices. Osmolality ranged from 339 to 696 mOsm kg^-1 in apple juice and from 482 to 612 mOsm kg^-1 in orange juice. In all but one case, ascorbate concentrations and osmolalities agreed with label information.