A pycnometer or picnometer is an instrument used to determine density.
In ceramic processing, slip density is an important property.
Slip contains ceramic particles and water.
The amount of solid material present in the slip affects casting behavior, drying behavior, and final product quality.
A picnometer helps in finding the density or specific gravity of the slip accurately.
Viscosity is usually measured by viscometer.
Residue is determined by sieving.
Flowability is determined by flow tests.
Therefore, the picnometer is used:
\[
\text{To determine density of slip}.
\]