one method of measuring the density of a liquid is illustrated in the figure. one side of the u-tube is in the liquid being tested, and the other side is in water of density 1000 kg/m3 . the air is partially removed at the upper part of the tube and the valve is closed. the height of the water above its pool surface is 0.59 m . the height of the liquid above its pool surface is 0.36 m . the difference in the heights of the pool surfaces is 0.08 m .
