EN ISO 787-23:1995

General method of tests for pigments and extenders - Part 23: Determination of density (using a centrifuge to remove entrained air) (ISO 787-23:1979)

Displacement liquids of known density should be selected in which the material to be tested is insoluble, and which has good wetting properties and a low evaporation rate under vacuum. High-boiling aromatic or aliphatic hydrocarbons are suitable. The temperature, t, at which the determination is carried out affects the density of the displacement liquid; each weighing should be made at a constant temperature. The principle consists in weighing into a tared tube a quantity of a dried sample, wetting it with displacement liquid, centrifuging until the occluded air is removed and calculation of the density from the difference of masses.

Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 23: Bestimmung der Dichte (unter Verwendung einer Zentrifuge zum Entfernen eingeschlossener Luft) (ISO 787-23:1979)

Dieser Teil von ISO 787 legt ein allgemeines Prüfverfahren zur Bestimmung der Dichte einer Pigment- oder Füllstoffprobe, unter Verwendung einer Zentrifuge zum Entfernen eingeschlossener Luft, fest.

Méthodes générales d'essai des pigments et matières de charge - Partie 23: Détermination de la masse volumique (en utilisant une centrifugeuse pour chasser l'air entrainé) (ISO 787-23:1979)

1.1 La partie 23 de la présente Norme internationale spécifie une méthode générale d'essai pour déterminer la masse volumique d'un échantillon de pigment ou de matière de charge, en utilisant une centrifugeuse pour chasser l'air entraîné.  
NOTE -- Chaque fois que cette méthode générale est applicable pour un pigment ou une matière de charge donné(e), il devra simplement y être fait référence dans la Norme internationale relative à ce pigment ou cette matière de charge, et il devra être mentionné, dans une note, toutes les modifications de détail qui peuvent être nécessaires en raison des propriétés spéciales du produit considéré. Ce n'est que dans le cas où une telle méthode générale ne serait pas applicable à un pigment particulier, qu'il deviendrait nécessaire de spécifier une méthode spéciale pour la détermination de la masse volumique en utilisant une centrifugeuse. 1.2 La partie 10 de la présente Norme internationale spécifie une méthode générale d'essai pour déterminer la

Splošne metode preskušanja pigmentov in polnil - 23. del: Določanje gostote (uporaba centrifuge za odstranitev ujetega zraka) (ISO 787-23:1979)

General Information

• Status: Published
• Publication Date: 22-Aug-1995
• Withdrawal Date: 28-Feb-1996
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: CEN/TC 298 - Pigments and extenders
• Drafting Committee: CEN/TC 298 - Pigments and extenders
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 07-Dec-2007
• Completion Date: 07-Dec-2007
• Ref Project: SIST EN ISO 787-23:1997 - General method of tests for pigments and extenders - Part 23: Determination of density (using a centrifuge to remove entrained air) (ISO 787-23:1979)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 787-23:1997
01-december-1997
6SORãQHPHWRGHSUHVNXãDQMDSLJPHQWRYLQSROQLOGHO'RORþDQMHJRVWRWH
XSRUDEDFHQWULIXJH]DRGVWUDQLWHYXMHWHJD]UDND,62
General method of tests for pigments and extenders - Part 23: Determination of density
(using a centrifuge to remove entrained air) (ISO 787-23:1979)
Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 23: Bestimmung der Dichte
(unter Verwendung einer Zentrifuge zum Entfernen eingeschlossener Luft) (ISO 787-
23:1979)
Méthodes générales d'essai des pigments et matieres de charge - Partie 23:
Détermination de la masse volumique (en utilisant une centrifugeuse pour chasser l'air
entrainé) (ISO 787-23:1979)
Ta slovenski standard je istoveten z: EN ISO 787-23:1995
ICS:
87.060.10 Pigmenti in polnila Pigments and extenders
SIST EN ISO 787-23:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 787-23:1997

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SIST EN ISO 787-23:1997

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SIST EN ISO 787-23:1997

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SIST EN ISO 787-23:1997
International Standard 787123
INTERNATIONAL ORGANIZATION FOR STANDARDlZATlOfWME>I(I1YHAPO~HAR OPrAHH3AlJHR fl0 CTAH&WTM3ALWl.ORGANlSATlON INTERNATIONALE DE 6lORMALISATION
General methods of test for pigments and extenders -
Part 23 I Determination of density (using a centrifuge to
remove entrained air)
Mbhodes g&n&ales d’essai des pigments et mat/&es de charge -
Pat-tie 23 : D&termination de la masse volumigue (en utilisant une centrifugeuse pour chasser /air entrain&
First edition - 19794227
UDC 667.622 : 620.1 : 531.754 Ref. No. IS0 787/23-1979 (E)
Descriptors : paints, pigments, tests, density measurement.
Price based on 2 pages

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SIST EN ISO 787-23:1997
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards institutes (IS0 member bodies). The work of developing Interna-
tional Standards is carried out through IS0 technical committees. Every member body
interested in a subject for which a technical committee has been set up 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 787/23 was developed by Technical Committee
ISO/TC 35, Paints and varnishes, and was circulated to the member bodies in
March 1978.
It has been approved by the member bodies of the following countries :
Austria Ireland Poland
Romania
Bulgaria Israel
Canada Italy South Africa, Rep. of
Egypt, Arab Rep. of Kenya Sweden
France Korea, Rep. of Switzerland
Germany, F. R. Netherlands Turkey
India New Zealand United Kingdom
Iran Norway Yugoslavia
No member body expressed disapproval of the document
0 International Organization for Standardization, 1979
Printed in Switzerland
ii

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SIST EN ISO 787-23:1997
The purpose of this International Standard is to establish a series of general test
methods for pigments and extenders which are suitable for all or many of the individual
pigments and extenders for which specifications might be required. In such cases, a
cross-reference to the general method should be included in the International Standard
relating to that pigment or extender, with a note of any detailed modifications which
might be needed in view of the special properties of the product in question.
Technical Committee ISO/TC 35 decided that all the general methods should be
published as they become available, as parts of a single International Standard, in order
to emphasize the relationship of each to the whole series.
The Technical Committee also decided that, where two or more procedures were
widely used for determining the same or a similar characteristic of a pigment or ex-
tender, there would be no objection to including more than one of them in the ISG
series. In such cases it will, however, be essential to state clearly in a specification
which method is to be used and, in the test report, which method has been used.
Parts of the series already published are as follows :
Part 1 : Comparison of colour
Part 2 : Determination of matter volatile at 105 OC
Part 3 : Determination of matter soluble in water - Hot extraction method
Part 4 : Determination of acidity or alkalinity of the aqueous extract
Part 5 : Determination of oil absorption value
Part 6 : Determination of residue on sieve - Oil method
Part
...