BS EN ISO 3104:2020 pdf free.Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosity. BS EN ISO 3104 This document specifies Procedure A, using manual glass viscometers, and Procedure B, using glass capillary viscometers in an automated assembly, for the determination of the kinematic viscosity, v, of liquid petroleum products, both transparent...