ISO 7668:2018 specifies methods for the measurement of specular reflectance and specular gloss of flat samples of anodized aluminium using geometries of 20° (Method A), 45° (Method B), 60° (Method C) and 85° (Method D); and of specular reflectance by an additional 45° method (Method E) employing a narrow acceptance angle.
The methods described are intended mainly for use with clear anodized surfaces. They can be used with colour-anodized aluminium, but only with similar colours.
Status: WithdrawnPublication date: 2018-02
Edition: 3Number of pages: 13
Technical Committee: ISO/TC 79/SC 2 Organic and anodic oxidation coatings on aluminium