NS EN 12373-11 : 1ED 2000

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Principle
4 Apparatus
5 Optical standards
6 Preparation and calibration of apparatus
7 Measurement of specular reflectance and specular gloss
8 Expression of results
9 Test report
Annex A (normative) Specular reflectance and specular gloss of black glass
Bibliography

This Standard defines methods for the measurement of specular reflectance and specular gloss of flat samples of anodized aluminium using geometries of 20 degree (Method A), 45 degree (Method B), 60 degree (Method C) and 85 degree (Method D), and of specular reflectance by an additional 45 degree method (Method E) employing a narrow acceptance angle. This Standard specifies methods, which are intended mainly for use with clear anodized surfaces. This methods can be used with colour -anodized aluminium, but only with similar colours.