ABSTRACT
The density of particles and powder is a physical property as important as the particle size. Although the density is defined as the ratio of mass to volume, the density of the particles does not necessarily agree with that of the particle material, as a particle occasionally includes closed voids. The measurement of particle density consists of measuring its mass and volume. The density of almost any particle can be measured because, in contrast with the liquid pycnometer method, there is no problem of particle solubility in the fluid medium. For fine particles, the value of bulk density varies within the range of the most loosely packed state to the most tightly packed state. When measuring the bulk density, the particle packing condition would have to be selected suitably according to the utilization purpose of the bulk density value. Mass and volume of particle bed in the measuring cap is measured to calculate the bulk density.
