Determination of particle size distribution using Hydrometer
The volume of suspension taken in the hydrometer test is
The effective depth (He) corresponding to each of the major calibration marks is given by the following expression
The meniscus correction in hydrometer reading is
The calibration curve is plot between
Determine the effective height (He) of the hydrometer if H = 5cm, h = 15cm, Vh = 80cm3, A = 30cm2.