Binder liquid is added to a dry powder mix and the consistency is measured as the mixing and addition of binder progresses.
The consistency of the mix is measured at regular periods so that the relationship between the amount of liquid binder added to the mix and the consistency in the resulting formulation can be accurately shown.
This type of test is most useful for formulation development and especially when formulations are showing difficult or unexpected types of behaviour.
This type of test is also used in the determination of “granulation endpoint”