Viscolite d21 is a portable resonant or vibrational viscometer used in industrial and research applications to measure viscosity in samples 100 ml (100 cc) / 3.39 oz and up. Featuring a built-in thermometer with automatic temperature compensation and a nearly maintenance-free design with no openly rotating parts, this handheld viscometer is delivered with one stainless steel measuring probe and displays measurements in centipoise (cP). The energy loss measurement during vibration yields very high accuracy in very small vessels.