NEN EN 196-10 : 2016

Foreword
1 Scope
2 Normative references
3 General requirements for testing
   3.1 Number of tests
   3.2 Repeatability and reproducibility
   3.3 Expression of masses, volumes, factors and results
   3.4 Blank determinations
4 Reagents
5 Apparatus
6 Preparation of a test sample of cement
7 Extraction procedure
   7.1 Principle
   7.2 Preparation of mortar
   7.3 Filtration
8 Determination of chromium (VI)
   8.1 General
   8.2 Measurement of absorbance without oxidation
   8.3 Measurement of absorbance with oxidation
9 Calculation and expression of results
   9.1 Calculation
   9.2 Expression of results
10 Reporting of results
11 Repeatability and reproducibility
Annex A (normative) Evaluation of the compliance of cement with
        the regulatory limit in Directive 2003/53/EC on water-soluble
        hexavalent chromium content
        Foreword
        A.1 Scope
        A.2 Normative references
        A.3 Terms and definitions
        A.4 Factory production control by the manufacturer
        A.5 Tasks for the verification body
        A.6 Compliance criteria
        A.7 Compliance assessment
        A.8 Actions in the event of non-compliance
        A.9 Requirements for dispatching centres
Annex B (informative) Guidance on the application of this European
        Standard to the determination of the water soluble
        chromium (VI) content of cement-containing preparations
        B.1 Background
        B.2 Extraction procedure
        B.3 Filtration procedure
        B.4 Calculation and reporting of results
        B.5 Evaluation of compliance
Annex C (informative) Guidance on screening test method (1) using
        paste extraction - method based on DS 1020
        C.1 Object and field of application
        C.2 Principle
        C.3 Reagents
        C.4 Apparatus
        C.5 Procedure
        C.6 Calculation of results
        C.7 Reporting result
        C.8 Precision and accuracy
        C.9 Report
Annex D (informative) Guidance on screening test method (2) using
        paste extraction - method based on TRGS 613
        D.1 Significance and use
        D.2 Basic principles of the method
        D.3 Apparatus
        D.4 Materials
        D.5 Construction of a calibration curve
        D.6 Sample preparation and analysis
        D.7 Evaluation and Interpretation
        D.8 Health and safety
Annex E (informative) Guidance on the photometric determination of
        chromium reduction capacity in cements
        Foreword
        E.1 Summary
        E.2 Scope
        E.3 Apparatus
        E.4 Reagents
        E.5 Procedure
        E.6 Calculations
        E.7 Result
        E.8 Control of instrument
Bibliography

Defines the method for the determination of the water-soluble chromium (6) content of cement.