Method description:
The prepared oil sample is filtered through a filter membrane and the membrane is then subjected to a colourimetric evaluation. The MPC index is determined by spectral colour measurement according to the CIE Lab scale in the filtered sample sediment.
Interpretation of results:
The level of the MPC index indicates the tendency of the oil to form deposits. The higher the MPC index, the greater the risk of deposits in the oil system. The components on the basis of which the index is determined (luminance), direct the oil’s degradation processes and indirectly indicate the selection of an appropriate remedy.
