SMOOTHNESS OF EXTENDER

This test is simple to perform. SMOOTHNESS is mainly compared to understand contamination, impurities and coares particles. It is just a qualitative method to detect impurities and variation.

PROCEDURE :

Take a pinch of extender sample between the fingers and rub the fingers. Judge the smoothness. Similarily do for the master sample. Judge the difference.

NOTE :
For more accurate method do the same operation with one fingure on a glass plate or tile.