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  • EN ISO 6271:2015

    Current The latest, up-to-date edition.

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

    Available format(s): 

    Language(s): 

    Published date:  23-12-2015

    Publisher:  Comite Europeen de Normalisation

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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".

    General Product Information - (Show below) - (Hide below)

    Committee CEN/TC 139
    Development Note Supersedes EN ISO 6271-1 & EN ISO 6271-2. (01/2016)
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    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

    Standards Referencing This Book - (Show below) - (Hide below)

    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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