<p>This document specifies methods for determining the hiding power given by paint coats of white or light colours of tristimulus values <i>Y</i> and <i>Y</i><sub>10</sub> greater than 25, applied to a black and white chart, or to a colourless transparent foil. In the latter case the tristimulus values <i>Y</i> and <i>Y</i><sub>10</sub> are measured over black and white panels. Subsequently, the hiding power is calculated from these tristimulus values.</p>
<p>This document also specifies a simple method for calculating the spreading rate for paints with a volatile matter content with low evaporation speed, e.g. coatings for interior walls and ceilings as specified in EN 13300.</p>
Registration number (WIID)
70903
Scope
<p>This document specifies methods for determining the hiding power given by paint coats of white or light colours of tristimulus values <i>Y</i> and <i>Y</i><sub>10</sub> greater than 25, applied to a black and white chart, or to a colourless transparent foil. In the latter case the tristimulus values <i>Y</i> and <i>Y</i><sub>10</sub> are measured over black and white panels. Subsequently, the hiding power is calculated from these tristimulus values.</p>
<p>This document also specifies a simple method for calculating the spreading rate for paints with a volatile matter content with low evaporation speed, e.g. coatings for interior walls and ceilings as specified in EN 13300.</p>
