• NS 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

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    Published date:  12-01-2013

    Publisher:  Norwegian Standards (Norges Standardiseringsforbund)

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    Describes a combustion method for determining the carbon content, if any, on the inner surface of tubes of copper or fittings of copper or copper alloys.

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    Document Type Standard
    Publisher Norwegian Standards (Norges Standardiseringsforbund)
    Status Current
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