This rig comprises of a sample container
which is centrally located beneath a disc
plunger. The disc plunger performs a
compression test which extrudes the product
up and around the edge of the disc.
This test measures the consistency of
viscous products such as yoghurt, creams
and sauces as well as processed fruit and
vegetables. Results relate to measurements
of viscosity. Three discs of different
diameters are provided. Usage depends on
the type of product to be tested and whether
it contains any particulates such as found in
soups or jams.