Viscosity is an important means to measure the rheology of ink, and it is also a main indicator of ink. Many rheological properties and application properties of inks are almost related to viscosity.
The viscosity of the ink can be measured with the help of various specialized instruments.

Relatively thick (thick) inks can be measured by cone-plate viscometers, belt-type viscometers, shaft-kinematic viscometers, and parallel-plate viscometers.

Relatively thin (thin) ink can be measured by rotary viscometer, small hole viscometer, etc.
Since these instruments have their own established methods of use, we will not repeat them here. We just want to wake up to one point, that is, the relationship between temperature and viscosity must be very important, and a small change in temperature may cause a large change in the drill rate coefficient.
