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BS ISO 5073:2021 – TC:2022 Edition

BS ISO 5073:2021 – TC:2022 Edition

$134.27

Tracked Changes. Brown coals and lignites. Determination of humic acids

Published By Publication Date Number of Pages
BSI 2022 36
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PDF Catalog

PDF Pages PDF Title
1 30449991
21 A-30404828
22 National foreword
26 Foreword
27 Introduction
29 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 Total humic acids
30 4.2 Free humic acid
5 Reagents
31 6 Apparatus
7 Sample
8 Procedure
8.1 Extraction of total humic acids
8.2 Extraction of free humic acid
32 8.3 Determination of humic acids in extracts
8.3.1 For total humic acids
8.3.2 For free humic acids
9 Calculation and expression of results
33 10 Precision
10.1 Repeatability limit
11 Test report
34 Annex A (normative) Determination of the ratio of carbon mass fraction to humic acids mass fraction of brown coals and lignites

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BS ISO 5073:2021 - TC
$134.27