Samples of milk can be accurately measured by the use of a 17.6 c. c. pipette. They can also be weighed, using 18 grams for each test.
All samples of cream should be accurately weighed on reliable scales, using 4 grams for each sample. Accurate work cannot be done by using a pipette for measuring, as cream of different percentages of fat varies considerably in volume.
When milk and cream are paid for on the fat basis, composite samples of each patron’s milk or cream are kept and tested at least twice each month.