What is the purpose of time on analyzing fluid viscosity ​

Gathering viscosity data on a material gives manufacturers the ability to predict how the material will behave in the real world.

Example:

If toothpaste does not have the correct viscosity, it can either be too difficult to pump out from the tube, or pump out too much.

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /