SIST ISO 928:1998
(Main)Spices and condiments -- Determination of total ash
Spices and condiments -- Determination of total ash
Épices -- Détermination des cendres totales
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INTERNATIONAL ISO
STANDARD 928
Second edition
1997-12-15
Spices and condiments — Determination of
total ash
Épices — Détermination des cendres totales
A
Reference number
ISO 928:1997(E)
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ISO 928:1997(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.
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 928 was prepared by Technical Committee TC 34, Agricultural food products,
Subcommittee SC 7, Spices and condiments.
This second edition cancels and replaces the first edition (ISO 928:1980), which has been technically revised.
Annex A of this International Standard is for information only.
© ISO 1997
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii
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©
ISO ISO 928:1997(E)
Introduction
This International Standard is applicable to most spices and condiments. In view of the number and variety of such
products, however, it may be necessary in particular cases to modify the method or even to choose a more suitable
method.
Such modifications and other methods will be indicated in the International Standards giving specifications for the
spices and condiments in question.
iii
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©
INTERNATIONAL STANDARD ISO ISO 928:1997(E)
Spices and condiments — Determination of total ash
1 Scope
This International Standard specifies a method for the determination of total ash from spices and condiments.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. All standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
ISO 948:1980, Spices and condiments — Sampling
ISO 2825:1981, Spices and condiments — Preparation of a ground sample for analysis
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods
3 Definition
For the purposes of this International Standard, the following definition applies.
3.1
total ash of spices and condiments
residues obtained after incineration at (550 ± 25) °C under the conditions specified in this International Standard,
expressed as a percentage by mass
4 Principle
Destruction of organic matter by heating the sample to constant mass at a temperature of (550 ± 25) °C.
5 Reagents
Use water in accordance with grade 3 of ISO 3696.
6 Apparatus
Usual laboratory apparatus and, in particular, the following.
6.1 Dish, flat-bottomed, of 50 ml to 100 ml capacity, made of plati
...
SLOVENSKI STANDARD
SIST ISO 928:1998
01-april-1998
=DþLPEH'RORþHYDQMHFHORWQHJDSHSHOD
Spices and condiments -- Determination of total ash
Épices -- Détermination des cendres totales
Ta slovenski standard je istoveten z: ISO 928:1997
ICS:
67.220.10 =DþLPEH Spices and condiments
SIST ISO 928:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ISO 928:1998
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SIST ISO 928:1998
INTERNATIONAL ISO
STANDARD 928
Second edition
1997-12-15
Spices and condiments — Determination of
total ash
Épices — Détermination des cendres totales
A
Reference number
ISO 928:1997(E)
---------------------- Page: 3 ----------------------
SIST ISO 928:1998
ISO 928:1997(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.
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 928 was prepared by Technical Committee TC 34, Agricultural food products,
Subcommittee SC 7, Spices and condiments.
This second edition cancels and replaces the first edition (ISO 928:1980), which has been technically revised.
Annex A of this International Standard is for information only.
© ISO 1997
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii
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SIST ISO 928:1998
©
ISO ISO 928:1997(E)
Introduction
This International Standard is applicable to most spices and condiments. In view of the number and variety of such
products, however, it may be necessary in particular cases to modify the method or even to choose a more suitable
method.
Such modifications and other methods will be indicated in the International Standards giving specifications for the
spices and condiments in question.
iii
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SIST ISO 928:1998
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SIST ISO 928:1998
©
INTERNATIONAL STANDARD ISO ISO 928:1997(E)
Spices and condiments — Determination of total ash
1 Scope
This International Standard specifies a method for the determination of total ash from spices and condiments.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. All standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
ISO 948:1980, Spices and condiments — Sampling
ISO 2825:1981, Spices and condiments — Preparation of a ground sample for analysis
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods
3 Definition
For the purposes of this International Standard, the following definition applies.
3.1
total ash of spices and condiments
r
...
NORME ISO
INTERNATIONALE 928
Deuxième édition
1997-12-15
Épices — Détermination des cendres
totales
Spices and condiments — Determination of total ash
A
Numéro de référence
ISO 928:1997(F)
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ISO 928:1997(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée aux
comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du comité
technique créé à cet effet. Les organisations internationales, gouvernementales et non gouvernementales, en
liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec la Commission
électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptés par les comités techniques sont soumis aux comités membres pour
vote. Leur publication comme Normes internationales requiert l'approbation de 75 % au moins des comités
membres votants.
La Norme internationale ISO 928 a été élaborée par le comité technique ISO/TC 34, Produits agricoles alimentaires,
sous-comité SC 7, Épices.
Cette deuxième édition annule et remplace la première édition (ISO 928:1980), dont elle constitue une révision
technique.
L’annexe A de la présente Norme internationale est donnée uniquement à titre d’information.
© ISO 1997
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publi-
cation ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun pro-
cédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord
écrit de l'éditeur.
Organisation internationale de normalisation
Case postale 56 • CH-1211 Genève 20 • Suisse
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Imprimé en Suisse
ii
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©
ISO ISO 928:1997(F)
Introduction
La présente Norme internationale est applicable à la majorité des épices. Toutefois, en raison du nombre et de la
diversité de celles-ci, il peut être nécessaire, dans des cas particuliers, d'apporter certaines modifications à la
méthode ou même de choisir une autre méthode plus appropriée.
Ces modifications et ces autres méthodes seront indiquées dans les Normes internationales propres aux
spécifications des épices considérées.
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NORME INTERNATIONALE © ISO ISO 928:1997(F)
Épices — Détermination des cendres totales
1 Domaine d'application
La présente Norme internationale prescrit une méthode pour la détermination des cendres totales dans les épices.
2 Références normatives
Les normes suivantes contiennent des dispositions qui, par suite de la référence qui en est faite, constituent des
dispositions valables pour la présente Norme internationale. Au moment de la publication, les éditions indiquées
étaient en vigueur. Toute norme est sujette à révision et les parties prenantes des accords fondés sur la présente
Norme internationale sont invitées à rechercher la possibilité d'appliquer les éditions les plus récentes des normes
indiquées ci-après. Les membres de la CEI et de l'ISO possèdent le registre des Normes internationales en vigueur
à un moment donné.
ISO 948:1980, Épices � Échantillonnage.
ISO 2825:1981, Épices � Préparation d'un échantillon moulu en vue de l’analyse.
ISO 3696:1987, Eau pour laboratoire à usage analytique � Spécification et méthodes d'essai.
3 Définitions
Pour les besoins de la présente Norme internationale, la définition suivante s'applique.
3.1
cendres totales d’épices
résidu obtenu après incinération à (550 – 25) °C dans les conditions spécifiées dans la présente Norme
internationale, exprimé en pourcentage en masse
4 Principe
Destruction des matières organiques par chauffage de l’échantillon à une température de (550 – 25) °C jusqu'à
obtention d’une masse constante.
5 Réactifs
Utiliser uniquement de l'eau de qualité 3 conformément à l'ISO 3696.
1
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© ISO
ISO 928:1997(F)
6 Appareillage
Matériel courant de laboratoire et, en particulier, ce qui suit.
6.1 Capsule, à fond plat, de 50 ml à
...
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