C.W. Brabender® Elatest®

The Elatest® determines the density of polymers, in particular of rubber and unvulcanized rubber compounds - a dimension of great importance for rubber processing during recipe development and for continuous production control.

The sample material is compressed within the measuring cylinder. Any gas contained in the sample escapes during this compression process. Under a preset pressure, the moving piston reaches a position that is specific to each individual sample --in essence the sample is compressed to its specific volume. The stroke of the piston is measured by a displacement transducer and transmitted to the computer.