Ubbelohde viscometer
= Ubbelohde viscometer
{wiki=Ubbelohde_viscometer}
An Ubbelohde viscometer is a type of capillary viscometer used to measure the viscosity of liquids. It is named after the German chemist Wolfgang Ubbelohde who developed this instrument. The device operates on the principle of measuring the time it takes for a specific volume of liquid to flow through a narrow capillary tube under the influence of gravity.