13. Test for chemical composition
The chemical composition of clay is very important to find out its suitability for various applications. The following elements have to be determined:

SiO2
Al2O3
CaO
MgO
TiO2
Fe2O3

Nowadays very recent advanced equipments are available like Atomic Absorption SpectroPhotometer, which gives within few seconds, the chemical composition of the clay to be tested. By using such equipments […]