The MPC (membrane patch colourimetry) test measures varnish precursors that accumulate from normal oil breakdown.

  • Five test tubes filled with different coloured substances
  • Four different sized metal filters
  • Two black cylinders on a green platform
  • A green and grey piece of equipment
  • A green and grey electrostatic contamination removal system
  • Six grey filters
  • Four colour patch tests ranging from brown to white