EVS-EN ISO 2813:1999

This standard is one of a series af standards dealing with the sampling and testing of paints, varnishes and  related products. It specifies a test method for determinig the specular gloss of paint film using a reflectometer geometry of 20°, 60° and 85°. The method is not suitable for the measurement of the gloss of metallic paints.
a) The 60° geometry is applicable to all paints films, but for very high gloss and near-matt films 20° or 85° 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).