ISO 6504-3:1998 Paints and varnishes - Determination of hiding power - Part 3: Determination of contrast ratio (opacity) of light-coloured paints at a fixed spreading rate
This part of ISO 6504 is one of a series of standards dealing with the sampling and testing of paints, varnishes and related products. It specifies 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 m/l to an agreed black and white chart or to colourless transparent polyester foil, in the latter case the tristimulus value Y being measured subsequently over agreed black and white glass panels.
ISO 6504-3:1998 history
2019ISO 6504-3:2019 Paints and varnishes — Determination of hiding power — Part 3: Determination of hiding power of paints for masonry, concrete and interior use
2006ISO 6504-3:2006 Paints and varnishes - Determination of hiding power - Part 3: Determination of contrast ratio of light-coloured paints at a fixed spreading rate
1998ISO 6504-3:1998 Paints and varnishes - Determination of hiding power - Part 3: Determination of contrast ratio (opacity) of light-coloured paints at a fixed spreading rate