METHODS OF TEST FOR PAINTS AND VARNISHES : PART D5 : DETERMINATION OF SPECULAR GLOSS OF NON-METALLIC PAINT FILMS AT 20º, 60º AND 85º (FIRST REVISION)
This Malaysian Standard is one of a series of standards dealing with the sampling and testing
of paints, varnishes and related products.
It specifies a test method for determining the specular gloss of paint films using a
reflectometer geometry of 20°, 60° or 85° (Note I and Note 2). The method is not suitable for
the measurement of the gloss of metallic paints.
(a) The 60° geometry is applicable to all paint films, but for very high gloss and near-matt
films, 20° or 85° geometry may be more suitable.
(b) The 20° geometry, which uses a smaller receptor aperture, is intended to give
improved differentiation between high-gloss paint films (i.e. films with a 60° specular gloss
higher than about 70 units).
(c) The 85° geometry is intended to give improved differentiation between low-gloss paint
films (i.e. films with a 60° specular gloss lower than about 10 units).
NOTE 1. The same geometry should, of course, be retained for a series of measurements even if this means
disregarding the suggested limits.
NOTE 2. In some cases, the determination of specular gloss may not correspond to a visual assessment.
