The Elatest® determines the density of polymers, in particular of rubber and unvulcanized rubber compounds – a decisive importance for rubber processing, both during recipe development and for continuous production control.
The sample material is compressed in the measuring cylinder. Any gas contained in the sample escapes during this compression process. Under a preset pressure, the moving piston reaches a position which is specific for each individual sample, i.e. the sample is compressed to its specific volume. The stroke of the piston is measured by a displacement transducer and transmitted to the computer.