ISO Flow Cups produced by our company are in accordance with International Standard ISO 2431, DIN 53224, EN 535, ASTM D 5125 (Paints and varnishes-Determination of flow time by Use of Flow Cups (Fourth edition)). They are made of high quality aluminum and feature stainless steel nozzle inserts (specification dependent).They are mirror polished & smooth finished for high efflux accuracy and easy maintenance. ISO Flow Cups are applicable to determine the flow time of Newtonian and near Newtonian fluids.