Consisting of a die body and 2 bolts, each with a highly polished pressing face, the sample and KBr mixture is placed into the body. The bolts are then tightened together to form the pressed pellet.   After pressing, the bolts are removed, with the sample being retained inside the die body. The body becomes the sample holder which is then placed on the supplied spectrometer mount which fits the universal slide in feature provided with almost all FTIR Spectrometers. If desired a vacuum pump can be attached to enable the removal of air for difficult or moisture sensitive samples.