Gardco Dip Viscosity Cups (Zahn Type) may be used anywhere - in shops, factories and laboratories - for quickly checking and adjusting the viscosity of many different types of liquids. Each cup has a 12-inch loop handle to allow the cup to be dipped by hand into a liquid container. At the center of this handle is a finger-ring for holding the cup in a vertical position during use. Results should be reported in Zahn-Seconds at a specified temperature for a particular cup. To convert Zahn-Seconds to centistokes, refer to ASTM D 4212.