EN 13639:2017

European foreword
1 Scope
2 Normative references
3 General requirements for testing
4 Reagents
5 General apparatus
6 Gravimetric method with wet oxidation (reference method)
7 Gravimetric method with furnace oxidation (alternative
   method No. 1)
8 Infrared detection method with furnace oxidation (low
   temperature) (alternative method No. 2)
9 Infrared detection or conductivity methods with furnace
   oxidation (high temperature): procedure A (alternative
   method No. 3)
10 Infrared detection or conductivity methods with furnace
   oxidation (high temperature): procedure B (alternative
   method No. 4)
11 Repeatability and reproducibility standard deviation,
   determination limit
12 Test report
Annex A (informative) - Features of commercial HF
        (High Frequency) combustion/infrared carbon
        analyzers
Annex B (informative) - Assignment of reagents to
        methods
Bibliography

This European Standard specifies methods for the determination of the total organic carbon content (TOC) in limestone.The standard describes the reference method and alternative methods which can be considered to be equivalent.In the case of a dispute, only the reference method is used.Any other methods may be used provided they are calibrated, either against the reference method or against internationally accepted reference materials, in order to demonstrate their equivalence.