SIST EN ISO 787-18:1997

General methods of test for pigments and extenders - Part 18: Determination of residue on sieve - Mechanical flushing procedure (ISO 787-18:1983)

The method specified can also be applied to the examination of other powders or granules which are insoluble in water. It is neither applicable to hydrophobic nor pelletized materials. In the test apparatus the material under test, dispersed in water, is brought into centrifugal motion by a system of rotating jets of water. he water flushes the fine particles through the sieve, the coarse particles being retained on the sieve. The residue on the sieve is dried and weighed. - Cancels and replaces ISO 787/18-1973 and constitutes its technical revision.

Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 18: Bestimmung des Siebrückstandes - Mechanisches Spülverfahren (ISO 787-18:1983)

Dieser Teil von ISO 787 legt ein allgemeines Verfahren zur Bestimmung des Siebrückstandes einer in Wasser aufgeschlämmten Pigment- oder Füllstoffprobe nach einem mechanischen Spülverfahren fest. Das Verfahren kann auch für andere in Wasser unlösliche Pulver oder Granulate angewendet werden. Es ist weder für hydrophobe noch für geperlte Pigmente und Füllstoffe anwendbar. ISO 787/7 legt ein allgemeines Verfahren zur Bestimmung des Siebrückstandes einer in Wasser aufgeschlämmten Pigment- oder Füllstoffprobe nach einem Handverfahren fest.

Méthodes générales d'essai des pigments et matieres de charge - Partie 18: Détermination du refus sur tamis - Méthode mécanique avec liquide d'entraînement (ISO 787-18:1983)

1.1 La présente partie de l'ISO 787 spécifie une méthode générale d'essai pour la détermination du refus sur tamis d'un échantillon de pigment ou de matière de charge dispersé dans l'eau, en utilisant une méthode mécanique avec liquide d'entraînement. Cette méthode s'applique également à l'examen d'autres poudres ou granules insolubles dans l'eau. Elle n'est pas applicable aux pigments et matières de charge qui ne se laissent pas mouiller par l'eau ni aux pigments et matières de charge en granules. 1.2 L'ISO 787/7 spécifie une méthode générale d'essai pour la détermination du refus sur tamis d'un échantillon de pigment ou de matière de charge dispersé dans l'eau, en utilisant une méthode manuelle. 1.3 Pour la plupart des pigments et matières de charge, ces deux méthodes donnent des résultats différents, et il est donc essentiel d'indiquer clairement, dans une spécification, la méthode qui doit être utilisée et, dans le procès-verbal d'essai, la méthode qui a été utilisée. N

Splošne metode preskušanja pigmentov in polnil - 18. del: Določanje ostanka na situ - Mehanski izpiralni postopek (ISO 787-18:1983)

General Information

• Status: Published
• Publication Date: 30-Nov-1997
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: PIP - Pigments and extenders
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-1997
• Due Date: 01-Dec-1997
• Completion Date: 01-Dec-1997
• Ref Project: EN ISO 787-18:1995 - General methods of test for pigments and extenders - Part 18: Determination of residue on sieve - Mechanical flushing procedure (ISO 787-18:1983)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 787-18:1997
01-december-1997
6SORãQHPHWRGHSUHVNXãDQMDSLJPHQWRYLQSROQLOGHO'RORþDQMHRVWDQNDQD
VLWX0HKDQVNLL]SLUDOQLSRVWRSHN,62
General methods of test for pigments and extenders - Part 18: Determination of residue
on sieve - Mechanical flushing procedure (ISO 787-18:1983)
Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 18: Bestimmung des
Siebrückstandes - Mechanisches Spülverfahren (ISO 787-18:1983)
Méthodes générales d'essai des pigments et matieres de charge - Partie 18:
Détermination du refus sur tamis - Méthode mécanique avec liquide d'entraînement (ISO
787-18:1983)
Ta slovenski standard je istoveten z: EN ISO 787-18:1995
ICS:
87.060.10 Pigmenti in polnila Pigments and extenders
SIST EN ISO 787-18:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 787-18:1997

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SIST EN ISO 787-18:1997

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SIST EN ISO 787-18:1997

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SIST EN ISO 787-18:1997
International Standard 787118
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEXJJYHAPOAHAR OPfAHt43A~MR fl0 CTAHAAPTbl3A~i4l4.ORGANlSATlON INTERNATIONALE DE NORMALISATION
General methods of test for Pigments and extenders -
Part 18 : Determination of residue on sieve -
Mechanical flushing procedure
Mthodes g&krales d ’essai des Pigments et matkres de Charge - Partie 78 : Determination du refus sur tamis - Methode
mkanique avec liquide d ’en trafnemen t
Second edition -,1983-02-15
w
-
Ref. No. ISO 787/18-1983 (EI
UDC 667.622 : 620.1 : 621.928
8
6)
Descriptors : paints, Pigments, determination, sieve residues.
cb
Price based on 4 pages

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SIST EN ISO 787-18:1997
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards bodies (ISO member bedies). The work of developing International
Standards is carried out through ISO technical committees. Every member body
interested in a subject for which a technical committee has been authorized 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 ISO Council.
International Standard ISO 787/18 was developed by Technical Committee
ISO/TC 35, Paints and varnishes, and was circulated to the member bodies in
November 1980.
lt has been approved by the member bodies of the following countries :
Austria
Ireland Poland
Belgium Israel Portugal
B razil
Italy Romania
Canada Kenya South Africa, Rep. of
China
Korea, Dem. P. Rep. of Spain
Czechoslovakia Korea, Rep. of Sweden
Egypt, Arab Rep. of Mexico Switzerland
Germany, F. R.
Netherlands United Kingdom
Hungary Norway USSR
following country
The member body of the expressed disapproval of the documen t on
technical grounds
France
This International Standard cancels and replaces ISO 787/XVIII-1973, of which it con-
stitutes a technical revision.
0 International Organkation for Standardization, 1983
Printed in Switzerland
ii

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SIST EN ISO 787-18:1997
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, Paints and varnishes, decided that all the general
methods should be published as they become available, as Parts of a Single Interna-
tional 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 ISO
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 of Pigments
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
: Determination of oil absorption value
Part 5
Part 7 : Determination of residue on sieve - Water method - Manual procedure
Part 8 : Determination of matter soluble in water - Cold extraction method
Part 9 : Determination of pH value of an aqueous Suspension
Part IO : Determination of density - Pyknometer method
Part 11 : Determination of tamped volume and apparent density after tamping
Part 13 : Determination of water-soluble sulphates, chlorides and nitrates
Part 14 : Determination of resistivity of aqueous extract
Part 15 : Comparison of resistance to light of coloured Pigments of similar types
Part 16 : Comparison of relative tinting strength (or equivalent colouring value) and
colour on reduction in linseed stand oil using the automatic muller
Part 17 : Comparison of lightening power of white Pigments
- Mechanical flushing procedure
Part 18 : Determination of residue on sieve
Part 19 : Determination of water-soluble nitrates - Salicylic acid method
Part 20 : Comparison of ease of dispersion - Oscillatory shaking method
Part 21 : Comparison of heat stability of Pigments using a stoving medium
Part 22 : Comparison of resistance to bleeding of Pigments
Part 23 : Determination of density (using a centrifuge to remove entrained air)
Part 24 : Determination of relative tinting strength of coloured Pigments and
relative stattering power of white Pigments - Photometric method
. . .
Ill

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SIST EN ISO 787-18:1997
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SIST EN ISO 787-18:1997
INTERNATIONAL STANDARD
ISO 787/18-1983 (El
General methods of test for Pigments and extenders -
Part 18 : Determination of residue on sieve -
Mechanical flushing procedure
0 Introduction 3 Definition
residue on sieve (R) : The coarse particles which remain on a
This document is a part of ISO 787, Generalmethods of test for
sieve of a specified nominal aperture when a test is performed
pigmen ts and extenders.
in accordance with this International Standard.
1
Scope and field of application
4 Principle
In the test apparatus, the Pigment or extender under test,
1 .l This part of ISO 787 specifies a general method for de-
dispersed in water, is brought into centrifugal motion by a
termining the residue on a sieve from a Sample of Pigment or
System of rotating jets of water. The water flushes the fine par-
extender dispersed in water, using a mechanical flushing
ticles through the sieve, the coarse particles being retained on
procedure. This method tan also be applied to the examination
the sieve. The residue on the sieve is dried and weighed.
of other powders or granules which are insoluble in water. lt is
neither applicable to hydrophobic nor pelletized Pigments and
extenders.
5 Materials
1.2 ISO 787/7 specifies a general method of test for de-
at a pressure of 300 + 20 kPa
5.1 Filtered tap water,
termining the residue on a sieve from a Sample of Pigment or
above atmospheric.
extender dispersed in water, using a manual procedure.
5.2 Wetting agents, such as ethanol 95 % (Vl V) or
1.3 For most Pigments and extenders, these two test
sulphonates, etc., for Pigments and ext
...