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BS ISO 21826-1:2022

BS ISO 21826-1:2022

$167.15

Iron ores. Determination of total iron content using the EDTA photometric titration method – Microwave digestion method

Published By Publication Date Number of Pages
BSI 2022 34
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PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
5 Reagents
11 6 Apparatus
12 7 Sampling and samples
7.1 Laboratory sample
7.2 Preparation of test samples
7.2.1 General
7.2.2 Ores having significant contents of combined water or oxidizable compounds
7.2.3 Ores outside the scope of 7.2.2
8 Procedures
8.1 Number of determinations
8.2 Test portion
13 8.3 Blank test
8.4 Determination
8.4.1 Decomposition of the test portion
8.4.2 Titration
8.5 Procedure of blank test
14 9 Expression of results
9.1 Calculation of total iron content
9.2 General treatment of results
9.2.1 Repeatability and permissible tolerance
15 9.2.2 Methods for checking the acceptability of the test results and determining the final quoted result
9.2.3 Between-laboratories precision
9.2.4 Check for trueness
16 9.2.5 Calculation of final result
9.3 Oxide factors
17 10 Test report
18 Annex A (informative) Flowsheet of the procedure for the acceptance of analytical values for test samples
19 Annex B (informative) Typical titration curves
21 Annex C (informative) Titration parameters for reference
32 Bibliography

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BS ISO 21826-1:2022
$167.15