
METHODS OF TEST FOR PAINTS - VISUAL COMPARISON OF THE COLOUR OF PAINTS
出版:British Standards Institution

专家解读视频
Defines a procedure for the visual comparison of the colour of films of paints or related products against a standard, either reference or freshly prepared, by means of either natural daylight or artificial light sources in a standard booth. Does not apply to coatings which contain special-effect pigments, such as metallics, without previous agreement on all details of illuminating and viewing conditions.
ISO 3668 : 2017 - Identical