Spreading
Coatings
Equations
Paints
Fixed
Optical measurement
Opacity
Hiding power (paints)
Thickness
Films (states of matter)
Varnishes
Test equipment
Contrast (optical)
Link: BS EN ISO 6504-3:2019 Paints and varnishes. Determination of hiding power Determination of hiding power of paints for masonry, concrete and interior use
Source: BSI Standards