SIST EN ISO 787-10:1997

General methods of test for pigments and extenders - Part 10: Determination of density - Pycnometer method (ISO 787-10:1993)

Describes common sampling method, expression of results and test report for two methods of density determination using a pyknometer (method A and B) as well as their apparatus and procedure in detail.

Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 10: Bestimmung der Dichte - Pyknometerverfahren (ISO 787-10:1993)

Dieser Teil von ISO 787 legt allgemeine Prüfverfahren zur Bestimmung der Dichte einer Pigment- oder Füllstoffprobe mit einem Pyknometer fest. ISO 787-23:1979, "Allgemeine Prüfverfahren für Pigmente und Füllstoffe; Bestimmung der Dichte (unter Verwendung einer Zentrifuge zum Entfernen eingeschlossener Luft)" legt ein allgemeines Verfahren unter Verwendung einer Zentrifuge zum Entfernen eingeschlossener Luft fest.

Méthodes générales d'essai des pigments et matieres de charge - Partie 10: Détermination de la masse volumique - Méthode utilisant un pycnometre (ISO 787-10:1993)

La présente partie de l'ISO 787 prescrit des méthodes générales d'essai pour la détermination de la masse volumique d'un pigment ou d'une matière de charge, en utilisant un pycnomètre. ISO 787-23:1979, 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 entraîné), prescrit une méthode générale utilisant une centrifugeuse pour extraire l'air piégé.  
NOTE 1 Les méthodes générales indiquées dans les différentes parties de l'ISO 787 sont généralement applicables à n'importe quel pigment ou matière de charge. Ainsi, il devra simplement être fait référence dans la Norme internationale à la partie appropriée de l'ISO 787 donnant la spécification pour ce pigment ou matière de charge, en indiquant toute modification de détail qui peut être nécessaire en raison des propriétés spéciales du produit considéré. Ce n'est que dans le cas où de telles méthodes générales ne seraient pas applicables à un produit particulier, qu'il deviendrait nécessaire de prescrire une méthode spéciale pour la détermination de la masse volumique.

Splošne metode preskušanja pigmentov in polnil - 10. del: Določanje gostote - Metoda s piknometrom (ISO 787-10:1993)

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 787-10:1995 - General methods of test for pigments and extenders - Part 10: Determination of density - Pycnometer method (ISO 787-10:1993)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 787-10:1997
01-december-1997
6SORãQHPHWRGHSUHVNXãDQMDSLJPHQWRYLQSROQLOGHO'RORþDQMHJRVWRWH
0HWRGDVSLNQRPHWURP,62
General methods of test for pigments and extenders - Part 10: Determination of density -
Pycnometer method (ISO 787-10:1993)
Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 10: Bestimmung der Dichte -
Pyknometerverfahren (ISO 787-10:1993)
Méthodes générales d'essai des pigments et matieres de charge - Partie 10:
Détermination de la masse volumique - Méthode utilisant un pycnometre (ISO 787-
10:1993)
Ta slovenski standard je istoveten z: EN ISO 787-10:1995
ICS:
87.060.10 Pigmenti in polnila Pigments and extenders
SIST EN ISO 787-10:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 787-10:1997

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SIST EN ISO 787-10:1997

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SIST EN ISO 787-10:1997

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SIST EN ISO 787-10:1997
ISO
INTERNATIONAL
787-10
STANDARD
Second edition
1993-06-15
General methods of test for Pigments and
extenders -
Part 10:
Determination of density - Pyknometer
method
Methodes g&-Grales d’essai des Pigments et matikres de Charge -
Partie 10: Determination de Ia masse volumique - Methode utilisant un
p ycnom& tre
Reference number
ISO 787-10:1993(E)

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SIST EN ISO 787-10:1997
ISO 787=10:1993(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. Esch 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.
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.
International Standard ISO 78740 was prepared by Technical Committee
ISO/lC 35, Paints and varnishes, Sub-Committee SC 2, Pigments and
extenders.
This second edition cancels and replaces the first edition
(ISO 787-10:1981), which has been technically revised. The second edi-
tion includes two methods, rather than three, that use the Same general
principle but differ somewhat in the apparatus used. Method B is more
convenient for Pigments of lower density. Method C, given in the first
edition, has been omitted in this second edition.
ISO 787 consists of the following Parts, under the general title Genera/
methods of test for Pigments and extenders:
- Part 1: Comparison of colour of Pigments
- Part 2: Determination of matter vola tile at 105 O C
- Part 3: Determination of matter soluble in wa ter - Hot extraction
method
- Part 4: Determination of acidity or alkalinity of the aqueous extract
- Part 5: Determination of oil absorption value
0 ISO 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronie or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland

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SIST EN ISO 787-10:1997
ISO 78740:1993(E)
Pafl 7: Determination of on sieve - Wa ter 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 10: Determination of density - Pyknometer method
Part 11: Determination of tamped volume and apparent density after
tamping
Part 13: Determination of wa ter-soluble sulphates, chlorides and ni-
tra tes
Part 14: Determination of resistivity of aqueous extract
Part 15: Comparison of resistance to light of coloured Pigments of
similar types
Part 16: Determination of relative tin ting s trength (or equivalen t
colouring value) and colour on reduction of coloured Pigments -
Visual comparison method
Part 17: Comparison of lightening power of white Pigments
Part 18: Determination of residue on sieve - Mechanical flus hing
procedure
Part 19: Determination of wa ter-soluble nitra tes (Salicylic acid
method)
Part 20: Comparison of ease of dispersion (Oscilla tory shaking
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 en-
trained air)
Part 24: Determination of relative tinting strength of coloured pig-
men ts and relative sca ttering power of white Pigments - Photo-
metric methods
Part 25: Comparison of the colour, in full-shade Systems, of white,
black and coloured Pigments - Colorimetric method
Part 26: Determination o f relative tinting strength and remaining
colour differente on reduction - Colorimetric method
Further Parts are planned. Parts 6 and 12 have been withdrawn. Parts 13,
14 and 17 are printed together in the same document.

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SIST EN ISO 787-10:1997
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SIST EN ISO 787-10:1997
ISO 787=10:1993(E)
INTERNATIONAL STANDARD
General methods of test for Pigments and
extenders -
Part IO:
Determination of density - Pyknometer method
ISO 842: 1984, Raw ma terials for pain ts and varnishes
1 Scope
- Sampling.
This part of ISO 787 specifies general methods of test
for determining the density of a Sample of Pigment
3 Preliminary considerations
or extender, using a pyknometer.
ISO 787-23: 1979, General methods of test for pig-
3.1 Displacement liquid
men ts and extenders - Part 23: Determination of
density (using a centrifuge to remove entrained air),
3.1.1 A liquid shall be selected in which the material
specifies a general method using a centrifuge to re-
to be tested is insoluble and which has good wetting
move trapped air.
properties and a low evaporation rate under a vacuum.
A high-boiling aliphatic hydrocarbon solvent with a
NOTE 1 The general methods given in the various Parts
final boiling Point over 170 “C is normally suitable.
of ISO 787 are usually applicable to any Pigment or
extender. Thus only a Cross-reference to the appropriate
NOTE 2 In addition to organic liquids, water with added
part of ISO 787 needs to be included in the International
wetting agent is also suitable.
Standard giving the specification for that Pigment or
extender, indicating any detailed modification that may be
needed in view of the special properties of the material in
3.1.2 Particular care is necessary in the selection of
question. Only when the general methods are not applicable
the liquid if carbon black is to be examined. The liquid
to a particular material is a different method for determi-
selected shall have particularly good wetting proper-
nation of density to be specified.
ties for carbon black.
NOTE 3 Carbon tetrachloride has been found suitable.
2 Normative references
3.2 Temperature of the determination
The following Standards contain provisions which,
through reference in this text, constitute provisions
The temperature at which the determination is carried
of this part of ISO 787. At the time of publication, the out significantly affects the density of the displace-
editions indicated were valid. All Standards are subject
ment liquid used, but not that of tfie material tested.
to revision, and Parties to agreements based on this
In Order that the determination may be carried out
part of ISO 787 are encouraged to investigate the
conveniently in the laboratory, the temperature of the
possibility of applying the most recent editions of the
determination shall be at least 5 OC above laboratory
Standards indicated below. Members of IEC and ISO
temperature.
maintain registers of currently valid International
Standards.
4 Sampling
ISO 565:1990, Test sieves - Metal wire cloth, per-
Take a representative Sample of the material to be
forated metal plate and electroformed sheet - Nom-
inal sizes of openings. tested, as described in ISO 842.
1

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SIST EN ISO 787-10:1997
ISO 78740:1993(E)
5.1.2.1 Vacuum desiccator, fitted with a two-hole
5 Method A
stopper. A glass tube with a three-way stopcock shall
pass through one hole of the stopper and connect the
desiccator to the vacuum pump (5.1.2.2), and the
5.1 Apparatus
stem of a dropping funnel shall pass through the other
hole of the stopper.
Ordinary laboratory apparatus and glassware, together
with the following.
5.1.2.2 Vacuum pump, or other apparatus, capable
of reducing the pressure to less than 2 kPal!
5.1 .l Pyknometer, Gay-Lussac type, of capacity
5.1.3 Water bath, thermostatically controlled, capa-
25 ml or 50 ml, with a stopper and loose-fitting cap
ble of being maintained to within +
...