•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
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Density (Specific Gravity) - DENS

This test procedure was employed in the Foresight Ceramic Database and now is available for those having an account at Insight-Live.com. Accumulating test data using the variables defined in these procedures enables us to create tools that enable you to compare the physical properties of materials and recipes.


This is the density of the actual mineral solid, not the weight of the bulk material powder. This is obvious if this value is being quoted for a mineral but can be confusing if it is for a powder. Thus the density of a powdered mineral is actually referring to the average specific gravity of the tiny particles making up that powder.

A third kind of density is the apparent density of a dried or fired ceramic body (which of course often contains many air pockets). The LDW test has more information on measuring the density of a dry ceramic bar.

ASTM C-128


VAL - Value (V)

The specific gravity of the solid itself (not the powder).

Out Bound Links

In Bound Links

  • (Articles) The Physics of Clay Bodies

    Learn to test your clay bodies and recording the results in an organized way and understanding the purpose of each test and how to relate its results to changes that need to be made in process and recipe.

  • (Tests) BDLB - Bulk Density lbs/cu. ft. (Packed)
  • (Tests) DFDM - Deflocculation Demand
  • (Materials) Ferro Frit 3134 - Leadless and low alumina high calcia borosilicate frit


By Tony Hansen

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