Ecol: DELTAE2000 grease colorimetry / CIELab L / CIELab a / CIELab b

  • • Standards: ASTM D7918-17a
  • • Unit: –
  • • Grease quantity: 0.5 g
  • • Application: plastic lubricants


  • method description:

    The parameter is determined under standardised measuring conditions on a colorimeter by determining the components in the CIElab standard colour space. The DELTA2000 parameter is determined with reference to the colour space of the reference (fresh) grease.



    interpretation of results:

    A change from the reference grease may be indicative of oxidation of the grease as a result of operation at high temperatures, a significant load of wear particles or contamination of a different nature, mixing with a different type of grease. A change in colour should be considered as an indication for extended testing.

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    You will find a list of all tests performed at the Ecol diagnostic laboratory on this page.

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