Abstract
In this paper, we have tried to observe a particle assembling state in a suspension conveniently and not expensively by using an optical microscope. Sample suspensions were sandwiched by two cover glasses for microscope keeping a certain gap space with 10 μm beads. Distilled water suspensions of 0.48 μm alumina powders were prepared to three types of assembling states, which are network coagulated, dispersed and blocky coagulated, by adding poly-carbonic ammonium, by changing suspension concentration up to 5 vol%. The observed images were changed to the gray images, and then they were numerically analyzed after classified to two and 256 levels based on whiteness. The analyzed results by the 256 levels can distinguish the differences of the three types of assembling states.
