BS 3900-D11:1998 - Methods of test for paints - Optical tests on paint films - Determination of contrast ratio (opacity) of light-coloured paints at a fixed spreading rate
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Defines procedures for determination of 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 m2/1 to an agreed black and white chart, or to colourless transparent polyester foil, in the latter case the tristimulus value Y is measured subsequently over agreed black and white glass panels.
Primary Item Type:
British Standard
Identifiers:
Standard Number BS 3900-D11:1998
ISBN 0 580 30575 9
ICS 87.040 Paints and varnishes
Language:
English
Subject Keywords:
Test equipment, Opacity, Contrast (optical), Optical measurement, Fixed, Comparative tests, Paints, Reproducibility, Coatings, Spreading, Equations, Films (states of matter)
BS 3900-D11:1998 - Methods of test for paints - Optical tests on paint films - Determination of contrast ratio (opacity) of light-coloured paints at a fixed spreading rate