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EN ISO 6271:2015

Current
Current

The latest, up-to-date edition.

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

23-12-2015

Publisher

Comite Europeen de Normalisation

European foreword
Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus and materials
5 Sampling
6 Procedure
7 Expression of results
8 Precision
9 Test report
Annex A (normative) - Platinum-cobalt colour standards
Bibliography

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".

Committee
CEN/TC 139
DevelopmentNote
Supersedes EN ISO 6271-1 & EN ISO 6271-2. (01/2016)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current
Supersedes

I.S. EN 16766:2017 BIO-BASED SOLVENTS - REQUIREMENTS AND TEST METHODS
BS EN 16766:2017 Bio-based solvents. Requirements and test methods
EN 16766:2017 Bio-based solvents - Requirements and test methods

ISO 15528:2013 Paints, varnishes and raw materials for paints and varnishes Sampling
ISO 4630:2015 Clear liquids Estimation of colour by the Gardner colour scale
ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods

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