<p>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 <i>Y</i> greater than 25, applied at a spreading rate of 20 m<sup>2</sup>/l to a black and white chart or to colourless transparent polyester foil. In the latter case, the tristimulus value <i>Y</i> is measured subsequently over black and white glass panels.</p>
Registration number (WIID)
39402
Scope
<p>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 <i>Y</i> greater than 25, applied at a spreading rate of 20 m<sup>2</sup>/l to a black and white chart or to colourless transparent polyester foil. In the latter case, the tristimulus value <i>Y</i> is measured subsequently over black and white glass panels.</p>
