Patent ID: 8454868

Claim:
A method for testing single or multilayer tablets manufactured in a multiple rotary press in which during normal operation: die holes of a circulating die plate of the press are successively filled with tablet material of different tablet layers in succeeding filling devices; the filled tablet material is compressed one layer after the foregoing layer into pressed tablets having n layers by means of synchronously circulating upper and lower compression punches; and the pressed tablets are subsequently ejected at one of a plurality of unloading stations and taken out of the press, whereby in a testing procedure: pressed articles are produced having only m layers of said tablets, whereby 1<=m<n; at least the m-th layer of said pressed articles is compressed more strongly than during normal manufacture of the tablets; and the pressed articles having said more strongly compressed at least m-th layer are elected and taken out at one of said plurality of unloading stations and conveyed to a testing station, wherein m-th layer tablet material of each of said pressed articles conveyed to the testing station has already been completely filled into respective die holes before initiation of said stronger compression so that the only pressed articles which are conveyed to the testing station have been filled into said die holes under normal conditions of operation without concurrent application of any stronger compression, and wherein the weight of each m-layer article is the same as the weight of an m-layer article filled into die holes under normal conditions of operation without concurrent application of any stronger compression.