BS 7020-19:1988
Current
The latest, up-to-date edition.
Analysis of iron ores Method for the determination of fluorine content. Ion-selective electrode method
Hardcopy , PDF
English
31-01-1989
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National foreword
Committees responsible
Method
1. Scope and field of application
2. References
3. Principle
4. Reagents
5. Apparatus
6. Sampling and samples
7. Procedure
8. Expression of results
9. Test report
Annexes
A. Flowsheet of the procedure for the acceptance of
analytical values for test samples
B. Derivation of repeatability and permissible
tolerance equations
C. Precision data obtained by international analytical
trial
Tables
1. Mass of test portion
2. Preparation of calibration solutions
Figures
1. Least-squares fit of precision against X for
fluorine
Applicable to fluorine contents in the range 0.005 to 1% (m/m) in natural iron ores, and iron ore concentrates and agglomerates including sinter products.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 85/44054 DC Also numbered as ISO 4694 (09/2005) Reviewed and confirmed by BSI, October 2014. (09/2014)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This International Standard specifies an ion-selective electrode method for the determination of the fluorine content of iron ores.
This method is applicable to a concentration range of 0,005 to 1 % (m/m) 1) of fluorine in natural iron ores, and iron ore concentrates and agglomerates including sinter products.
| Standards | Relationship |
| ISO 4694:1987 | Identical |
| BS 5660-1:1987 | Methods of sampling iron ores Manual method of increment sampling |
| ISO 5725:1986 | Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests |
| BS 5660-2:2001 | Methods of sampling iron ores Sampling and sample preparation procedures |
| BS 7020-1:1988 | Analysis of iron ores Method for the preparation of pre-dried test samples for chemical analysis |
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