CEN/TS 14429:2005

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 Preparation of test sample
   7.3 Determination of dry residue
   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 test
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 Technical Specification is applicable to determine the influence of pH on the leachability of inorganic constituents from a waste material. Equilibrium condition as defined in the standard is established by addition of pre-determined amounts of acid or base to reach desired end pH values. This test method produces eluates, which are subsequently characterized physically and chemically. This Technical Specification is a parameter specific test as specified in ENV 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 ENV 12920.