• ISO 4221:1980

    Current The latest, up-to-date edition.

    Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English, French

    Published date:  01-11-1980

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    Applies to the range of 3,5 to 150 micrograms per cubic metre, assuming an air sample volume of 2 m3 and a sample solution volume of 50 ml. For higher concentrations, dilution of the sample may be necessary.

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    Committee ISO/TC 146/SC 3
    Document Type Standard
    Publisher International Organization for Standardization
    Status Current

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