A kinematic viscometer is a device used to measure the viscosity of fluids. Viscosity refers to a fluid's resistance to flow, which is important in various industries, including petroleum, food, and pharmaceuticals. The kinematic viscometer operates by allowing a fluid to flow through a calibrated tube under the influence of gravity, measuring the time it takes for the fluid to pass between two points. The results are typically expressed in centistokes (cSt), which is a unit of kinematic viscosity. Kinematic viscometers can be classified into different types, such as capillary viscometers and falling ball viscometers, each suited for specific applications and fluid types.