Brix-TS is an electronic Brix-Sensor integrated into the PowerMixer bowl of the CalfExpert calf feeder, which continuously measures the dry matter of the freshly mixed calf milk. Brix-TS can detect different mixing concentrations of milk replacer. The control of the CalfExpert then corrects the concentration of the milk so that the right milk mixture is always prepared. That is important for example if the necessary calibration has not been carried out after changing the milk replacer. The control of the CalfExpert also compensates for fluctuations in the composition of the whole milk by addition of milk powder. With Brix-TS the CalfExpert uses the dry matter (total solids) as the definition of the milk composition. In future, there is no risk of confusion in the recommendations for milk concentration.