60.60 Standard published Dec 23, 2015
CEN
CEN/TC 139 Paints and varnishes
European Norm
87.060.20 Binders
Published
ISO 6271:2015 specifies a spectrophotometric method for estimating the colour of clear liquids in terms of platinum-cobalt units (Pt-Co units). It is applicable to clear liquids having a colour characteristic similar to those of the platinum-cobalt colour scale specified in Annex A. For products with colours more intense than the Pt-Co stock solution the method specified in ISO 4630 applies.
The spectrophotometric method provides a more precise way of measuring Pt-Co colour than a visual sample comparison by human eyes.
NOTE The term "Pt-Co colour" used here is preferred over the terms "Hazen colour" and "APHA colour".
PUBLISHED
EN ISO 6271:2015
60.60
Standard published
Dec 23, 2015
