EN ISO 6719:2010

SLOVENSKI STANDARD
01-januar-2012
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Anodizing of aluminium and its alloys - Measurement of reflectance characteristics of
aluminium surfaces using integrating-sphere instruments (ISO 6719:2010)
Anodisieren von Aluminium und Aluminiumlegierungen - Messung der
Reflexionseigenschaften von Aluminiumoberflächen mit Hilfe Ulbrichtscher Kugeln (ISO
6719:2010)
Anodisation de l'aluminium et de ses alliages - Mesurage des caractéristiques de
réflectivité des surfaces d'aluminium à l'aide d'instruments à sphère d'intégration (ISO
6719:2010)
Ta slovenski standard je istoveten z: EN ISO 6719:2010
ICS:
25.220.20 Površinska obdelava Surface treatment
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 6719
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2010
ICS 25.220.20 Supersedes EN 12373-12:2000
English Version
Anodizing of aluminium and its alloys - Measurement of
reflectance characteristics of aluminium surfaces using
integrating-sphere instruments (ISO 6719:2010)
Anodisation de l'aluminium et de ses alliages - Mesurage Anodisieren von Aluminium und Aluminiumlegierungen -
des caractéristiques de réflectivité des surfaces Messung der Reflexionseigenschaften von
d'aluminium à l'aide d'instruments à sphère d'intégration Aluminiumoberflächen mit Hilfe Ulbrichtscher Kugeln (ISO
(ISO 6719:2010) 6719:2010)
This European Standard was approved by CEN on 14 October 2010.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
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Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6719:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 6719:2010 has been prepared by Technical Committee ISO/TC 79 “Light metals and their
alloys” of the International Organization for Standardization (ISO) and has been taken over as
which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the
latest by April 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12373-12:2000.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 6719:2010 has been approved by CEN as a EN ISO 6719:2010 without any modification.

INTERNATIONAL ISO
STANDARD 6719
Second edition
2010-10-15
Anodizing of aluminium and its alloys —
Measurement of reflectance
characteristics of aluminium surfaces
using integrating-sphere instruments
Anodisation de l'aluminium et de ses alliages — Mesurage des
caractéristiques de réflectivité des surfaces d'aluminium à l'aide
d'instruments à sphère d'intégration

Reference number
ISO 6719:2010(E)
©
ISO 2010
ISO 6719:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 6719:2010(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Principle.1
4 Apparatus.1
4.1 General .1
4.2 Geometrical specifications of the apparatus.2
4.3 Specular-included and specular-excluded determinations .2
4.4 Irradiation beam.2
4.5 Housing .3
5 Calibration and operation of the reflectometer .7
5.1 General .7
5.2 Reference standards .8
6 Measurement .8
7 Expression of results.8
7.1 Calculation of reflectance values .8
8 Test report.9

ISO 6719:2010(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 6719 was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee
SC 2, Organic and anodic oxidation coatings on aluminium.
This second edition cancels and replaces the first edition (ISO 6719:1986), which has been technically revised.

iv © ISO 2010 – All rights reserved

INTERNATIONAL STANDARD ISO 6719:2010(E)

Anodizing of aluminium and its alloys — Measurement of
reflectance characteristics of aluminium surfaces using
integrating-sphere instruments
1 Scope
This International Standard specifies a method of measuring the total and diffuse luminous reflectance
characteristics of aluminium surfaces, using integrating-sphere instruments.
The method described is also applicable to the measurement of specular reflectance (principal gloss value),
specularity and diffuseness.
The method is unsuitable for use with lighting reflectors.
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 7724-2, Paints and varnishes — Colorimetry — Part 2: Colour measurement
ISO 11664-2:2007, Colorimetry — Part 2: CIE standard illuminants
3 Principle
Measurement, using an integrating-sphere reflectometer, of the total and diffuse reflected light at different
angles of incidence, close to the normal surface of a test specimen.
4 Apparatus
4.1 General
The reflectometer, suitable for measuring the reflectance of metallic surfaces, consists of a suitable light
source, an integrating sphere and a photometer comprising a photo-electric cell with a signal multiplier and
recording, indicating, or computing equipment. Figures 1 to 5 show the optical systems and geometry of
typical instruments.
The incident light beam is allowed to fall onto the specimen and is reflected into the sphere, the interior of
which is white, where it is automatically integrated. The average light flux, as measured by the photometer, is
a measure of the quantity of the reflected light.
The spectral product of the light source, spectral filters, and spectral response of the light detector shall
closely simulate the spectral product of the CIE source C (or D65) and the spectral luminous efficiency V(λ) for
photopic vision, in accordance with ISO 11664-2.
ISO 6719:2010(E)
4.2 Geometrical specifications of the apparatus
4.2.1 Integrating sphere
The interior of the sphere, white-coated and fitted with a device to permit measurement of reflectance, either
including or excluding specular reflectance, serves to collect the reflected light flux.
Any diameter of sphere is satisfactory, provided that the total port area does not exceed 5 % of the total
internal surface.
The internal surface shall be diffusing and of a highly reflective white for the whole of the visible spectrum. The
entrance and specimen ports of the instrument shall be centred on the same great circle with an arc of more
than 170° between their centres. The specimen port shall subtend 8° ± 1° of arc in relation to the centre of the
entrance port. The irradiating beam shall pass through the centreline of the entrance and specimen ports. A
photometer shall be positioned on the sphere at 90° ± 0,5° from the ent
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