0

EN ISO 6271:2015

Clear liquids - Estimation of colour by the platinum-cobalt colour scale (ISO 6271:2015) EN ISO 6271:2015

Publication date:   Mar 17, 2016

General information

60.60 Standard published   Dec 23, 2015

CEN

CEN/TC 139 Paints and varnishes

European Norm

87.060.20   Binders

Buying

Published

Language in which you want to receive the document.

Scope

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".

Life cycle

PREVIOUSLY

WITHDRAWN
EN ISO 6271-1:2004

WITHDRAWN
EN ISO 6271-2:2004

NOW

PUBLISHED
EN ISO 6271:2015
60.60 Standard published
Dec 23, 2015