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CEN
EN ISO 4630:2015

EN ISO 4630:2015

Current

Current

The latest, up-to-date edition.

Clear liquids - Estimation of colour by the Gardner colour scale (ISO 4630:2015)

Published date

23-12-2015

Publisher

Comite Europeen de Normalisation

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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) - Gardner colour standards
Bibliography

ISO 4630:2015 specifies a method for estimating the colour of optically clear, yellow/brownish coloured liquid products by means of the Gardner colour scale using colour-measuring instruments. The method uses the Gardner colour scale described in Annex A.It is applicable to drying oils, varnishes and solutions of fatty acids, polymerized fatty acids, resins, tall oil, tall oil fatty acids, rosin and related products. The results might be invalid if other products are tested.The method described provides a more precise way of measuring Gardner colour than a visual sample comparison using human eyes. It is applicable to products having colours from Gardner 1 to Gardner 18. The Gardner scale is not applicable to products with colours darker than 18. For products with colours lighter than Gardner 1 the method specified in ISO 6271 applies.

Committee
CEN/TC 139
DevelopmentNote
Supersedes EN ISO 4630-1 & EN ISO 4630-2. (01/2016)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current
Supersedes

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

ISO 13632:2012 Binders for paints and varnishes — Rosin — Sampling and sample preparation for colour measurement
ISO 6271:2015 Clear liquids Estimation of colour by the platinum-cobalt colour scale
ISO 15528:2013 Paints, varnishes and raw materials for paints and varnishes Sampling
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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