ASTM D4890 - 13

    Standard Test Methods for Polyurethane Raw Materials: Determination of Gardner and APHA Color of Polyols

    Active Standard ASTM D4890 | Developed by Subcommittee: D20.22

    Book of Standards Volume: 08.02


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    Significance and Use

    5.1 These test methods are suitable for quality control, as specification tests, and for research. Color is an important property of urethane products.

    1. Scope

    1.1 These test methods measure visually the color of clear polyester and polyether liquids. They apply only to materials whose colors have light-absorption characteristics similar to those of the standards. An alternative method is Test Method D1209 (see Note 1).

    1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    Note 1Test Method A of this standard is equivalent to ISO 6271-1. Test Method B of this standard is equivalent to ISO 4630-1.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D883 Terminology Relating to Plastics

    D1193 Specification for Reagent Water

    D1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)

    D5386 Test Method for Color of Liquids Using Tristimulus Colorimetry

    D6166 Test Method for Color of Pine Chemicals and Related Products (Instrumental Determination of Gardner Color)

    E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

    E308 Practice for Computing the Colors of Objects by Using the CIE System

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    E1164 Practice for Obtaining Spectrometric Data for Object-Color Evaluation

    ISO Standards

    ISO 4630-1 Clear Liquids--Estimation of Colour by the Gardner Colour Scale--Part 1: Visual Method

    ISO 4630-2 Clear Liquids--Estimation of Colour by the Gardner Colour Scale--Part 2: Spectroscopic Method

    ISO 6271-1 Clear Liquids--Estimation of Color by the Platinum-Cobalt Scale--Part 1: Visual Method

    ISO 6271-2 Clear Liquids--Estimation of Color by the Platinum-Cobalt Scale--Part 2: Spectroscopic Method


    ICS Code

    ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics); 83.080.20 (Thermoplastic materials)

    UNSPSC Code

    UNSPSC Code 12352100(Organic derivatives and substituted compounds)


    DOI: 10.1520/D4890-13

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