capillary viscometer

A capillary viscometer is a precise instrument used to measure a fluid’s viscosity—the resistance to flow. It consists of a narrow tube (capillary) through which the liquid is allowed to flow under gravity or pressure. By measuring the time it takes for a specific volume of fluid to pass between two marks, scientists can determine its viscosity. The device relies on the principle that more viscous liquids flow more slowly. Capillary viscometers are widely used in laboratories for quality control and research, providing accurate and repeatable measurements of a fluid’s flow behavior.