- Zahn Cup and Ford Cup, etc. are representative equipments to measure viscosity by time(unit of second). Ford Cup mostly uses 4, and there are five available holes for Zahn Cup, 1 to 5. There are each different holes. Therefore, viscosity can be measured from high to low.
- Centipoise (cp) conversion chart (Ford ＃ 4, Zahn 1.2.3.4.5)
- Measurement standards : ASTM D 1200(Ford Cup)