Granule Compaction Rig

Granule compression tests provide an important measure of physical strength and breakdown characteristics. Granule hardness/compressibility testing is important to provide an indicator of the tabletting potential of some materials. Where granules are irregular in form, however, the measurement of single granules is discouraged as repeatability is compromised. In this instance, the testing of a fixed area of sample is advised to create an averaging effect over a larger number of granules and improve the quality of the results.

The Granule Compaction Rig provides a circular testing area into which the sample is deposited and contained before compression with a cylinder probe of similar diameter to the testing area. Normally, the maximum force and energy (area under the curve) are taken and used as an indication of hardness. The higher the force and energy required to compress, the more difficult it will be to form the granules into tablets at a later date.

Granular material.

• Retains granular material for compression testing.