This unit is designed to measure the time it takes for a precision rod to fall 10cm. After several "fall times" are measured, the viscosity and yield value of the ink can be calculated by using the software included with the instrument or by using your own technique. This test conforms to ASTM D 4040-10 and ISO 12644 . “Standard Test Method for Rheological Properties of Paste Printing and Vehicles by the Falling-Rod Viscometer”
The basic system consists of the instrument stand, road and collar, and a 100 gm weight.