SN EN 723 : 2009
Current
The latest, up-to-date edition.
COPPER AND COPPER ALLOYS - COMBUSTION METHOD FOR DETERMINATION OF THE CARBON CONTENT ON THE INNER SURFACE OF COPPER TUBES OR FITTINGS
01-12-2013
Foreword
1 Scope
2 Normative references
3 Definitions
3.1 Residual carbon
3.2 Potential carbon
3.3 Total carbon
4 General principle
5 Preparation of samples
5.1 General
5.2 Selection of samples
5.3 Cleaning of inner surface of sample
5.4 Cleaning of outer surface of sample
5.5 Cutting of test pieces
6 Combustion method for carbon-containing products
7 Methods for carbon content determination
7.1 General
7.2 Method using tetrabutylammonium hydroxide (HTBA)
7.3 Method of determination by measurement of
differential electrical conductivity
7.4 Method of determination of infrared absorption
spectrometry
7.5 Determination of blank value
8 Expression of results
9 Calibration
10 Test report
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