ASTM D7488 - 11

    Standard Test Method for Open Time of Latex Paints

    Active Standard ASTM D7488 | Developed by Subcommittee: D01.42

    Book of Standards Volume: 06.02


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    Significance and Use

    Latex paints dry very quickly which often causes difficulty in final appearance of painted areas, especially paints formulated below 100g/L VOC where lower amounts of solvents are in the formulated latex paint. This method is a means of determining the time available before a test paint cannot be worked into a previously painted area.

    1. Scope

    1.1 This test method covers a procedure to determine the length of time a latex paint remains wet or open enough to allow for brush-in and repair.

    1.2 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.


    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

    D3924 Specification for Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials

    D5068 Practice for Preparation of Paint Brushes for Evaluation

    D5301 Practice for Physical Characterization of Paint Brushes

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

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


    ICS Code

    ICS Number Code 87.040 (Paints and varnishes)

    UNSPSC Code

    UNSPSC Code 31211506(Latex paints)


    DOI: 10.1520/D7488-11

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