bulk characterization

The volume occupied by a known amount/ weight of powder when filled

in a measuring cylinder. It includes true volume and void volume.

• bulk volume

• void volume

• true volume

• all

The measuring cylinder filled with a powder and tapped 100 times. The

volume occupied by powder is termed as true volume. Its unit is ml.

• bulk volume

• void volume

• true volume

• all

Mass of powder / Bulk volume...............Equation-1.1

• bulk density

• density

• true density

• none

Mass of powder / True volume...............Equation-1.2

• true density

• bulk density

• density

• none

Bulk volume -True Volume...............Equation-1.3

• void volume

• porosity

• true volume

• bulk volume

Void volume / True volume...............Equation-1.4

• porosity

• void volume

• true volume

• none

= ρt / ρb...............Equation-1.8

• hausners index

• carr's index

• none

• both

= (ρt - ρb/ ρt ) 100...............Equation-1.7

• carr's index

• hausners index

• none

• both

The bulk characterization of powder is required to

• confirm packaging,

• flow properties

• compression characteristic

• all