CSN EN ISO 3668

CSN EN ISO 3668 This document specifies a method for the visual comparison of the colour of films of paints or related products against a standard (either a reference standard or a freshly prepared standard) using artificial light sources in a standard booth. It is not applicable to coatings containing special-effect pigments, e.g. metallic, without previous agreement on all details of illuminating and viewing conditions
Original English text of CSN EN Standard.
The price of the Standard included all amendments and correcturs.