Marsh Funnel Viscosity
Marsh Funnel Viscosity : Commonly called the funnel viscosity. The Marsh funnel viscosity is reported as the number of seconds required for a given fluid to flow 1 qt through the Marsh funnel. In some areas the efflux quantity is 1,000 cc. See API RP 13B for instructions. See also Kinematic Viscosity. (Bul D11)