CEN/TS 14997:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Principle
6 Reagents and laboratory devices
   6.1 Reagents
   6.2 Laboratory devices
7 Sampling
   7.1 Laboratory sample
   7.2 Test sample
   7.3 Determination of dry residue of the sample
   7.4 Test portion
8 Test procedure
   8.1 Contact time
   8.2 pH range
   8.3 Leaching test
   8.4 Natural pH
9 Eluate treatment, storage and analysis
10 Blank tests
11 Performance characteristics
12 Test report
Annex A (informative) Example of a data sheet
Annex B (informative) Operation and uses of the test: influence
                      of pH on the leaching behaviour
Annex C (informative) Preliminary determination of the acid/base
                      consumption
Annex D (informative) Examples of acid and base neutralisation
                      capacities for waste, soil, sediment and
                      construction materials
Bibliography

This document specifies a test method for the determination of the influence of pH on the leachability of inorganic constituents from a waste material. Equilibrium condition as defined in the document is established by continuous adjustment of the pH by addition of acid or base to reach desired pH values. This test method produces eluates, which are subsequently characterized physically and chemically. This document is a parameter specific test as specified in EN 12920. The application of this test method alone is not sufficient for the determination of the detailed leaching behaviour of a waste under specified conditions.NOTEThis generally requires the application of several test methods, behavioural modelling and model validation as specified in EN 12920.