Measuring glaze slurry specific gravity

Wednesday 16th July 2014

This is the easiest way to measure the specific gravity of a glaze if it is not in a container deep enough to float a hydrometer (or if it is too thick to float it properly). Just counterbalance the empty graduated cylinder to zero, fill it to the 100cc mark and the scale reads the specific gravity. Be careful on cheap plastic graduated cylinders like this, check them with water and correct the true 100cc mark if needed (using a felt pen). You could actually use any tall narrow container you have (if you mark the 100cc level). The hard way? A container that holds other than 100cc: you have to divide the slurry weight by water weight.

Pages that reference this post in the Digitalfire Reference Database:

Understanding the Deflocculation Process in Slip Casting, Specific gravity of a glaze using a scale and measuring cup, Deflocculation, Specific gravity, Rheology, Thixotropy

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of