The Effect of Various Homogenization Pressures on the Leucocyte Count of Milk

Results of 30 trials showed that homogenizing milk at 2,500 pounds pressure at 142° to 144° F. reduced the leucocyte count on an average of 41.28 per cent. Rehomogenizing milk five times at 5,000 pounds pressure reduced the leucocyte count 92.4 per cent with little effect on the intensity of the sediment. Milk homogenized at 5,000 pounds pressure for 10 minutes showed a reduction of leucocyte count of 99.1 per cent. The intensity of the sediment was the same in all homogenized samples. The addition of increasing portions of high-pressure homogenized milk to normal clarified homogenized milk resulted in a corresponding increase in the intensity of the sediment in the milk mixture.