A measuring apparatus and method are described for measuring the breaking force of frangible arrangement connecting a capsule with a closed annular shaped guarantee band, with an annular ridge axially holding the guarantee band, a pusher element that pushes the capsule for breaking the frangible arrangement, sensor for detecting the traction force exerted by the pusher element, a lifting and abutment device arranged to feed the capsule to the annular projection, and a disengagement portion for removing the guarantee band from the annular projection, after the breakage of the frangible media, leaving the closed annular shape of the guarantee band intact.