ISO 6504-3:2006 describes methods for determining the opacity (by contrast ratio measurement) given by paint films of white or light colours of tristimulus value Y greater than 25, applied at a spreading rate of 20 m2/l to a black and white chart or to colourless transparent polyester foil. In the latter case, the tristimulus value Y is measured subsequently over black and white glass panels.

General information

  • Status :  Withdrawn
    Publication date : 2006-02
  • Edition : 2
    Number of pages : 7
  • :
    ISO/TC 35/SC 9
    General test methods for paints and varnishes
  • 87.040
    Paints and varnishes

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