Our approach at Granutools is to have the best proxy for your process. A good proxy in terms of measurement method is a device able to mimic the process conditions. The stress state and the flow field of the powder should be comparable in the powder tester and in the process.
We developed the GranuDrum following this statement. Therefore, for example in the next processes, the rotating drum geometry of the GranuDrum powder tester is a good proxy: the recoater process in additive manufacturing, the rotating mixer in a pharma process, the optifiller stage in tableting, the rotary press, among others. These processes have a high flow field and a low-stress state, as shown in the image below just like in the rotating drum. The GranuDrum is a good complementary tool for the shear cell.