SIST EN ISO 4630-1:2005

SLOVENSKI STANDARD
SIST EN ISO 4630-1:2005
01-april-2005
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Clear liquids - Estimation of colour by the Gardner colour scale - Part 1: Visual method
(ISO 4630-1:2004)
Klare Flüssigkeiten - Bestimmung der Farbe nach der Gardner-Farbskala - Teil 1:
Visuelles Verfahren (ISO 4630-1:2004)
Liquides clairs - Évaluation de la couleur au moyen de l'échelle Gardner - Partie 1:
Méthode visuelle (ISO 4630-1:2004)
Ta slovenski standard je istoveten z: EN ISO 4630-1:2004
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
87.060.99 Druge sestavine barv Other paint ingredients
SIST EN ISO 4630-1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4630-1:2005

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SIST EN ISO 4630-1:2005

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SIST EN ISO 4630-1:2005

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SIST EN ISO 4630-1:2005
INTERNATIONAL ISO
STANDARD 4630-1
First edition
2004-11-15
Clear liquids — Estimation of colour by
the Gardner colour scale —
Part 1:
Visual method
Liquides clairs — Évaluation de la couleur au moyen de l'échelle
Gardner —
Partie 1: Méthode visuelle

Reference number
ISO 4630-1:2004(E)
©
ISO 2004

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SIST EN ISO 4630-1:2005
ISO 4630-1:2004(E)
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©
ii ISO 2004 – All rights reserved

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SIST EN ISO 4630-1:2005
ISO 4630-1:2004(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Apparatus and materials . 1
5 Sampling . 3
6 Procedure . 3
7 Expression of results . 3
8 Precision . 3
9 Test report . 4
Annex A (normative) Calculating chromaticity coordinates for Gardner colour standards . 5
Annex B (normative) Liquid Gardner colour standards . 6
©
ISO 2004 – All rights reserved iii

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SIST EN ISO 4630-1:2005
ISO 4630-1:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 4630-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 10,
Test methods for binders for paints and varnishes, in collaboration with ASTM D 01.34, Naval stores. It has
been harmonized with ASTM D 1544-98, Standard Test Method for Color of Transparent Liquids (Gardner Color
Scale).
It cancels and replaces ISO 4630:1997, which has been technically revised. The main changes are that the
chromaticity coordinates and luminous transmittances are now used as reference standards instead of liquid
standards and that the conversion procedure for glass test tubes having an inside diameter other than
(10,65± 0,025) mm has been deleted.
ISO 4630 consists of the following parts, under the general title Clear liquids — Estimation of colour by the
Gardner colour scale:
— Part 1: Visual method
— Part 2: Spectrophotometric method
©
iv ISO 2004 – All rights reserved

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SIST EN ISO 4630-1:2005
INTERNATIONAL STANDARD ISO 4630-1:2004(E)
Clear liquids — Estimation of colour by the Gardner colour
scale —
Part 1:
Visual method
1Scope
This part of ISO 4630 specifies a method for estimating, by means of the Gardner colour scale, the colour of
clear, yellow/brown liquid products using colour-measuring instruments. The results might be invalid if other
products are tested.
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.
It is applicable to products having colours from Gardner 1 to Gardner 18. The Gardner scale is not applicable to
products with colours lighter than 1 or darker than 18.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
CIE Publication No. 15.2, Colorimetry
3 Principle
The colour of a sample of the product under examination is viewed in a glass tube of standard diameter and
visually compared with the colours of arbitrarily numbered colour standards. The standard that most closely
matches the colour of the test sample is identified and the result is expressed in terms of a number on the
Gardner colour scale.
4 Apparatus and materials
4.1 Gardner colour standards.
4.1.1 Reference standards
The chromaticity coordinates and luminous transmittances specified in Table 1 are required as reference
standards for calibration.
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ISO 2004 – All rights reserved 1

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SIST EN ISO 4630-1:2005
ISO 4630-1:2004(E)
Colour standards that do not conform to the requirements in Table 1 shall be rejected.
Table 1 — Colour specifications for reference standards
Gardner colour Luminous Tolerance on
Chromaticity coordinates
standard number transmittance, Y transmittance
xy % (±) %
1 0,317 7 0,330 3 80 7
2 0,323 3 0,335 2 79 7
3 0,332 9 0,345 2 76 6
4 0,343 7 0,364 4 75 5
5 0,355 8 0,384 0 74 4
6 0,376 7 0,406 1 71 4
7 0,404 4 0,435 2 67 4
8 0,420 7 0,449 8 64 4
9 0,434 3 0,464 0 61 4
10 0,450 3 0,476 0 57 4
11
...