ISO 1619:1976
(Main)Cryolite, natural and artificial - Preparation and storage of test samples
Cryolite, natural and artificial - Preparation and storage of test samples
Specifies the procedure for the preparation of crude samples and dried samples and of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The crude sample is intended for the determination of geometric characteristics, for certain physical and physico-chemical tests and for moisture determination. The dried sample serves especially for chemical tests. The principle of the procedure consists in grinding followed by sieving of the sample until the whole passes through a sieve of mesh aperture 0,125 mm. Thorough mixing and drying at approximately 110 °C.
Cryolithe, naturelle et artificielle — Préparation et conservation des échantillons pour essai
General Information
- Status
- Published
- Publication Date
- 31-Aug-1976
- Technical Committee
- ISO/TC 226 - Materials for the production of primary aluminium
- Drafting Committee
- ISO/TC 226/WG 4 - Smelter grade fluorides
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 24-Oct-2022
- Completion Date
- 13-Dec-2025
Overview
ISO 1619:1976 is an international standard published by the International Organization for Standardization (ISO) that details the procedure for preparation and storage of natural and artificial cryolite test samples. This standard applies specifically to materials with a molar ratio of sodium fluoride (NaF) to aluminium trifluoride (AlF3) between approximately 3 and 1.7. It provides clear guidelines for preparing both crude and dried samples, essential for consistent and accurate chemical, physical, and physico-chemical testing in industrial and research applications.
Cryolite, widely used in aluminium production and other metallurgical processes, requires precise sample handling to ensure reliable test results. ISO 1619:1976 establishes a reproducible preparation procedure involving grinding, sieving, thorough mixing, drying, and appropriate storage to maintain sample integrity.
Key Procedures
The standard addresses the following key steps to prepare cryolite test samples:
Sample Types: Defines two main sample types:
- Crude samples for moisture determination, geometric characterization, and some physical tests.
- Dried samples optimized for chemical analysis and physico-chemical testing.
Grinding and Sieving: Samples must be ground thoroughly and sieved until all particles can pass through a mesh with an aperture of 0.125 mm. This ensures uniform particle size for testing accuracy.
Drying Process: Dried samples are oven-dried at approximately 110 °C for at least 2 hours, then cooled in a desiccator to remove moisture before storage or testing.
Mixing: After sieving, samples are mixed thoroughly to achieve homogeneity, which is critical for consistent test outcomes.
Storage: Prepared samples are stored in airtight containers that are nearly filled with the sample to minimize exposure to air and moisture, preserving the sample’s quality until analysis.
Marking and Labeling: Containers must be clearly labeled with:
- Product name
- Product origin
- Sample type (crude or dried)
- Type of sieve used
- Date of preparation
These procedures ensure standardization across laboratories and testing facilities worldwide.
Applications
The ISO 1619:1976 standard is vital for organizations and laboratories involved in:
- Quality control of cryolite materials in aluminium smelting and other industries.
- Chemical analysis laboratories focusing on the composition and purity of natural and synthetic cryolite.
- Research and development of materials involving cryolite, requiring reproducible sample preparation methods.
- Standardizing test methods that involve physical, chemical, and moisture content assessment of cryolite samples.
- Ensuring traceability and consistency in cryolite sample handling and testing, to support compliance with industrial and regulatory requirements.
By following ISO 1619:1976 standards, operators can guarantee that test results are reliable and comparable globally.
Related Standards
ISO 1619:1976 is part of a broader series of ISO standards related to cryolite testing and analysis, including:
- ISO 1620 – Determination of silica content (Modified Willard-Winter method)
- ISO 1693 – Determination of fluorine content
- ISO 1694 – Determination of iron content (1,10-Phenanthroline photometric method)
- ISO 2366 – Determination of sodium content (Flame emission and atomic absorption)
- ISO 2367 – Determination of aluminium content (Gravimetric and atomic absorption methods)
- ISO 3391 – Determination of calcium content (Flame atomic absorption)
- ISO 3392 & ISO 3393 – Determination of water and moisture content (Electrometric and gravimetric methods)
- ISO 4277 – Evaluation of free fluoride content (Conventional titrimetric method)
- ISO 4280 – Determination of sulphates content (Barium sulphate gravimetric method)
These complementary standards provide a comprehensive framework for assessing cryolite quality and composition, reinforcing the importance of proper sampling as established by ISO 1619.
Keywords: ISO 1619, cryolite preparation, test sample preparation, sample drying, cryolite storage, sodium fluoride aluminium trifluoride ratio, chemical analysis standards, physical testing of cryolite, cryolite sample handling, international cryolite standards
ISO 1619:1976 - Cryolite, natural and artificial -- Preparation and storage of test samples
ISO 1619:1976 - Cryolithe, naturelle et artificielle -- Préparation et conservation des échantillons pour essai
ISO 1619:1976 - Cryolithe, naturelle et artificielle -- Préparation et conservation des échantillons pour essai
Frequently Asked Questions
ISO 1619:1976 is a standard published by the International Organization for Standardization (ISO). Its full title is "Cryolite, natural and artificial - Preparation and storage of test samples". This standard covers: Specifies the procedure for the preparation of crude samples and dried samples and of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The crude sample is intended for the determination of geometric characteristics, for certain physical and physico-chemical tests and for moisture determination. The dried sample serves especially for chemical tests. The principle of the procedure consists in grinding followed by sieving of the sample until the whole passes through a sieve of mesh aperture 0,125 mm. Thorough mixing and drying at approximately 110 °C.
Specifies the procedure for the preparation of crude samples and dried samples and of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The crude sample is intended for the determination of geometric characteristics, for certain physical and physico-chemical tests and for moisture determination. The dried sample serves especially for chemical tests. The principle of the procedure consists in grinding followed by sieving of the sample until the whole passes through a sieve of mesh aperture 0,125 mm. Thorough mixing and drying at approximately 110 °C.
ISO 1619:1976 is classified under the following ICS (International Classification for Standards) categories: 71.060.50 - Salts. The ICS classification helps identify the subject area and facilitates finding related standards.
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Standards Content (Sample)
INTERNATIONAL STANDARD
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXJYHAPOJJHASI OPTAHM3AUMR l-IO CTAH~APTM3A~MM~ORGANISATION INTERNATIONALE DE NORMALISATION
Cryolite, natura1 and artificial - Preparation and storage
of test samples
Cryolithe, na turelle e t ar tificielle - Prbpara tion et conserva tion des echan tillons pour essai
First edition - 1976-09-15
UDC 553.634 : 620.11
Ref. No. ISO 16194976 (E)
Descriptors : aluminium ores, cryolite, samples, preparation,
test specimens, storage, Chemical analysis.
Price based on 2 pages
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). 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 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 ISO Council.
Prior to 1972, the results of the work of the Technical Committees were published
as ISO Recommendations; these documents are now in the process of being
transformed into International Standards. As part of this process, Technical
Committee ISO/TC 47 has reviewed ISO Recommendation R 1619 and found it
technically suitable for transformation. International Standard ISO 1619 therefore
replaces ISO Recommendation R 1619-1970.
ISO Recommendation R 1619 was approved by the Member Bodies of the
following countries :
Austral ia Hungary Romania
Austria India South Africa, Rep. of
Belgium Iran Spain
Brazil l srael Sweden
Canada Italy Switzerland
Czechoslovakia Netherlands Turkey
Egypt, Arab Rep. of New Zealand United Kingdom
France Norway U.S.S.R.
Germany Poland Yugoslavia
Greece Portugal
No Member Body expressed disapproval of the Recommendation.
No Member Body disapproved the transformation of ISO/R 1619 into an
International Standard.
0 International Organkation for Standardkation, 1976 l
Printed in Switzerland
ISO 16194976 (E)
INTERNATIONAL STANDARD
Cryolite, natura1 and artificial - Preparation and storage
of test samples
The sieve shall be selected in relation to the impurity to be
1 SCOPE AND FIELD OF APPLICATION
determined.
This International Standard specifies the procedure for the
preparation and storage of test samples, i.e. crude samples
and dried samples, of natura1 and artificial cryolite, and of Mortar, of corundum or agate.
3.3.2 2
natura) and synthetic materials having a molar ratio
(NaF/AI F3) between 3 and 1,7 approximately.
capable of being controlled at
3.3.2.3 Electric oven,
110rt2”c.
2 REFERENCE
ISO . . ., Cryolite, natura1 and artificial - Sanpling. 1)
3.3.3 Proc
...
NORME INTERNATIONALE
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION *ME-KlYHAPOLIHAR OPI-AHM3AUMJl i-I0 CTAHflAPTM3AUW4 .ORGANISATION INTERNATIONALE DE NORMALISATION
Cryolithe, naturelle et artificielle - Préparation et
conservation des échantillons pour essai
Cryolite, na tural and artificial - Preparation and storage of test samples
Première édition - 1976-09-15
-
LL
Y
CDU 553.634 : 620.11 Réf. no : ISO 1619-1976 (F)
Descripteurs : minerai d’aluminium, cryolithe, échantillon, préparation, spécimen d’essai,
entreposage, analyse chimique.
Prix basé sur 2 pages
AVANT-PROPOS
L’ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres ISO). L’élaboration des
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
Avant 1972, les résultats des travaux des Comités Techniques étaient publiés
comme Recommendations ISO; maintenant, ces documents sont en cours de
transformation en Normes Internationales. Compte tenu de cette procédure, le
Comité Technique ISO/TC 47 a examiné la Recommandation ISO/R 1619 et est
d’avis qu’elle peut, du point de vue technique, être transformée en Norme
Internationale. La présente Norme Internationale remplace donc la
Recommandation ISO/R 1619-1970.
La Recommandation ISO/R 1619 avait été approuvée par les Comités Membres des
pays suivants :
Afrique du Sud, Rép. d’ Grèce Portugal
Allemagne Hongrie Roumanie
Australie
Inde Royaume-Uni
Autriche Iran Suède
Belgique
Israël Suisse
Brésil
Italie Tchécoslovaquie
Canada
Norvège Turquie
Égypte, Rép. arabe d’ Nouvelle-Zélande
U.R.S.S.
Espagne Pays-Bas
Yougoslavie
France Pologne
Aucun Comité Membre n’avait désapprouvé la Recommandation.
Aucun
Comité Membre n’a désapprouvé la transformation de la
Recommandation lSO/R 1619 en Norme Internationale.
0 Organisation Internationale de Normalisation, 1976 l
Imwimé en Suisse
ISO 16194976 (F)
NORME INTERNATIONALE
Cryolithe, naturelle et artificielle - Préparation et
conservation des échantillons pour essai
1 OBJET ET DOMAINE D’APPLICATION 3.3.2 Appareillage
La présente Norme Internationale spécifie des modes de Matériel courant de laboratoire, et
préparation et de conservation des échantillons pour essai,
c’est-à-dire de l’échantillon brut et de l’échantillon séché, de
3.3.2.1 Tamis, d’ouverture de maille 0,125 mm, en un
la cryolithe, naturelle et artificielle, ainsi que des produits,
matériau ne pouvant pas apporter l’impureté à doser.
à rapport molaire (NaF/Al F3)
naturels et synthétiques,
Le tamis doit être choisi en fonction de l’impureté à doser.
compris entre 3 et 1,7 environ.
3.3.2.2 Mortier, en
...
NORME INTERNATIONALE
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION *ME-KlYHAPOLIHAR OPI-AHM3AUMJl i-I0 CTAHflAPTM3AUW4 .ORGANISATION INTERNATIONALE DE NORMALISATION
Cryolithe, naturelle et artificielle - Préparation et
conservation des échantillons pour essai
Cryolite, na tural and artificial - Preparation and storage of test samples
Première édition - 1976-09-15
-
LL
Y
CDU 553.634 : 620.11 Réf. no : ISO 1619-1976 (F)
Descripteurs : minerai d’aluminium, cryolithe, échantillon, préparation, spécimen d’essai,
entreposage, analyse chimique.
Prix basé sur 2 pages
AVANT-PROPOS
L’ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres ISO). L’élaboration des
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
Avant 1972, les résultats des travaux des Comités Techniques étaient publiés
comme Recommendations ISO; maintenant, ces documents sont en cours de
transformation en Normes Internationales. Compte tenu de cette procédure, le
Comité Technique ISO/TC 47 a examiné la Recommandation ISO/R 1619 et est
d’avis qu’elle peut, du point de vue technique, être transformée en Norme
Internationale. La présente Norme Internationale remplace donc la
Recommandation ISO/R 1619-1970.
La Recommandation ISO/R 1619 avait été approuvée par les Comités Membres des
pays suivants :
Afrique du Sud, Rép. d’ Grèce Portugal
Allemagne Hongrie Roumanie
Australie
Inde Royaume-Uni
Autriche Iran Suède
Belgique
Israël Suisse
Brésil
Italie Tchécoslovaquie
Canada
Norvège Turquie
Égypte, Rép. arabe d’ Nouvelle-Zélande
U.R.S.S.
Espagne Pays-Bas
Yougoslavie
France Pologne
Aucun Comité Membre n’avait désapprouvé la Recommandation.
Aucun
Comité Membre n’a désapprouvé la transformation de la
Recommandation lSO/R 1619 en Norme Internationale.
0 Organisation Internationale de Normalisation, 1976 l
Imwimé en Suisse
ISO 16194976 (F)
NORME INTERNATIONALE
Cryolithe, naturelle et artificielle - Préparation et
conservation des échantillons pour essai
1 OBJET ET DOMAINE D’APPLICATION 3.3.2 Appareillage
La présente Norme Internationale spécifie des modes de Matériel courant de laboratoire, et
préparation et de conservation des échantillons pour essai,
c’est-à-dire de l’échantillon brut et de l’échantillon séché, de
3.3.2.1 Tamis, d’ouverture de maille 0,125 mm, en un
la cryolithe, naturelle et artificielle, ainsi que des produits,
matériau ne pouvant pas apporter l’impureté à doser.
à rapport molaire (NaF/Al F3)
naturels et synthétiques,
Le tamis doit être choisi en fonction de l’impureté à doser.
compris entre 3 et 1,7 environ.
3.3.2.2 Mortier, en
...


















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