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    I.S. EN ISO 489:1999

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    PLASTICS - DETERMINATION OF REFRACTIVE INDEX

    Available format(s):  Hardcopy, PDF

    Superseded date:  19-04-2022

    Language(s):  English

    Published date:  01-01-1999

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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

    1 Scope
    2 Normative references
    3 Apparatus and materials
      3.1 Method A
      3.2 Method B
    4 Preparation of test specimens
      4.1 Method A
      4.2 Method B
      4.3 Required number of specimens or measurements
    5 Conditioning
    6 Procedure
      6.1 Method A
      6.2 Method B
    7 Precision
    8 Test report

    Abstract - (Show below) - (Hide below)

    Defines two test methods for determining the refractive index of plastics, namely: Method A: a refractometric method for measuring the refractive index of moulded parts, cast or extruded sheet or film, by means of a refractometer; Method B: an immersion method (making use of the Becke line phenomenon) for determining the refractive index of powdered or granulated transparent materials by means of a microscope.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    ISO 5725-3:1994 Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method
    ISO 291:2008 Plastics Standard atmospheres for conditioning and testing
    ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
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