Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents
7 Sample pretreatment
8 Procedure
9 Eluate treatment and storage
10 Analytical determination
11 Blank test
12 Calculation
13 Expression of results
14 Test report
15 Performance characteristics
Annex A (informative) - Schematic representation of the
        fractionation procedure
Annex B (informative) - Validation of procedure
Annex C (informative) - Conditions regarding centrifugation
Bibliography

Abstract

Describes a procedure to determine the concentration of humic substances in soil or other materials.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 190
Supersedes	ISO/DIS 12782-4 : 60.00 (2012)