PREN 12457-1 : DRAFT 1999

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
4 Compliance test
   4.1 Principle
   4.2 Equipment and reagents
   4.3 Sampling strategy and sample preparation
        4.3.1 Sampling strategy
        4.3.2 Particle size reduction
        4.3.3 Determination of the dry matter content ratio
               and the moisture content ration
        4.3.4 Preparation of test portion
5 Procedure
   5.1 Testing conditions
   5.2 Description of the procedure
        5.2.1 Leaching step
        5.2.2 Liquid-solid separation step
   5.3 Further preparation of the eluate for analysis
   5.4 Blank test for the application of the leaching procedure
6 Calculation
7 Documentation and test report
   7.1 Sample preparation
   7.2 Production of eluate
   7.3 Analytical determination
   7.4 Calculations and blank test information
8 Performance characteristics
Annex A (informative) Information on the influence on the test
        results of the parameters that affect leaching
Annex B (normative) Test for determining whether waste is in the
        liquid state
Annex C (informative) References
Annex D (informative) Example of datasheet for EN 12457-1
Annex E (informative) Process map for EN 12457-1
Annex F (informative) Example of a specific liquid-solid
        separation procedure for soil sample

Defines a compliance test providing information on leaching of granular wastes and sludges under the experimental conditions and particularly a liquid to solid ratio of 2l/kg dry matter. It applies to waste which has a particle size below 4 mm without or with size reduction.