The specially developed mini-brush de-duster is the perfect solution for de-dusting sample tablets. It is incorporated prior to the Checkmaster or Weightmaster, thereby keeping the testers clean and the weighing cell free from dust throughout the entire batch. Because of its very low space requirement, the mini-de-duster can be attached directly at the sampling gate of the press or to the test device, connected through a venturi. It is equally possible to use the mini-brush de-duster as a stand-alone device in the laboratory. The parts can easily be dismantled without tools for cleaning.