CRT (Compression-Relaxation-Traction) Tests measure the Consistency, Elasticity and Adhesiveness of a product. It enables relevant parameters to be selected to defi ne a product’s texture, and which will be related to its hardness, cohesion, and adhesiveness or free-running nature.
A test of 3 consecutive phases is carried out: Compression followed by a Relaxation phase without movement where the reaction force (elastic thrust) of the sample is measured, then the probe is lifted while the fl uid’s Traction force is measured, indicating its adhesiveness.
The 3 phases are identifi ed on the curve Force =f(time) The calculated parameters are:
It will therefore be easy to compare and rank different textures of products according to their response curve and the quantifi ed values of these parameters.
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