Jar Test Apparatus is an equipment used for simulating and analyzing the process of coagulation and flocculation in water treatment. It consists of a set of multiple plastic or glass beakers, usually arranged on a motorized rotating platform. It is equipped with paddles or stirrers that agitate the water sample, facilitating the mixing of chemicals and coagulants. By varying the speed and duration of the stirring, several mixing conditions can be tested. The Jar Test Apparatus allows water treatment professionals and researchers to determine optimal dosages, evaluate the effectiveness of different coagulants, and also observe the formation and settling of flocs in water samples.