Size reduction within the context of sample preparation

In general “size reduction” is taken to mean the disintegration of solid substances by mechanical forces without altering their state.

 This also includes the division of liquids into drops or gases into bubbles. However, the physical and chemical condition of the disintegrated material may alter, particularly when inhomogeneous substances are present. The preparation for separation according to material components, e.g. dressing ores or grinding  (...)