Organic coatings

Organic coatings

Organic coatings
Category: Tests
Last updated: 05/06/2020

The Laboratory of Materials and Coatings (LMR) of LNEG is a specialized center in the fields of corrosion, degradation and anticorrosive protection of materials

Several tests are performed for organic coatings characterization:

  • Cross cut adhesion test *
  • Pull-off adhesion test *
  • Specular Gloss (20º, 60º and 85º) *
  • Measurement of color and color difference (0° / 45°) *
  • Measurement of color and color difference (d/8º)
  • Whiteness Index *
  • Persoz and Koning hardness *
  • Buchholz hardness *
  • Pencil hardness *
  • Scratching resistance *
  • Dry film thickness
  • Wet film thickness *
  • Bending test with cylindrical mandrills *
  • Bending test with conical mandrel *
  • Curing degree *
  • Film permeability to water vapor (rev. isolates) *
  • Porosity detection (high voltage) *
  • Porosity detection (low voltage) *
  • Water absorption rate *
  • Abrasion resistance by falling sand *
  • Wet- scrub resistance and cleanability of coatings *
  • Resistance to reverse and direct impact *
  • Cupping test *
  • Helmen chalking degree *
  • Visual inspection (defects evaluation)

* Test not included in the scope of accreditation.


Cost upon request

Deadlines for the service

  • To carry out tests the time limit for submission of a quotation is 24 to 96 hours after request, depending on its extend/complexity;
  • Tests are initiated after acceptance of quotation and reception of samples or as agreed between parts;
  • The report is issued 10 days after the end of the tests. This period may be extended depending on the number of samples tested as well as on the number of tests carried out.
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