Particulate products are subjected to forces of different direction and magnitude during production, storage and transportation. These forces may lead to dust formation or even fracture of the particles. The prediction of how a particle will behave in a process requires a particle breakage tester. For every breakage mechanism a different tester is required, to isolate the physics acting on the particles. In this paper the new abrasion tester is presented, testing mainly tangential forces acting on the particles. (C) 2010 Elsevier B.V. All rights reserved.