ASTM D4399 - 05(2011)

    Standard Test Method for Measuring Electrical Conductivity of Electrocoat Baths

    Active Standard ASTM D4399 | Developed by Subcommittee: D01.21

    Book of Standards Volume: 06.01


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    Significance and Use

    The conductivity of electrocoat baths results from the presence of ionic species in the bath, which come from the vehicle and from the presence of impurities present as ionizable acids, bases, salts, or combinations of these. The presence of excessive amounts of ionic impurities is detrimental to the application and performance properties of electrocoating paints. The test is suitable for use in research, production, quality control and electrocoat bath process control.

    Other related methods for determining the electrical conductivity of water are described in Test Methods D1125.

    1. Scope

    1.1 This test method covers the determination of the electrical conductivity of electrocoat baths or ultrafiltrate samples using commercially available equipment.

    1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

    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.


    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

    D1125 Test Methods for Electrical Conductivity and Resistivity of Water

    D1193 Specification for Reagent Water


    ICS Code

    ICS Number Code 25.220.40 (Metallic coatings)

    UNSPSC Code

    UNSPSC Code 73181101(Electro coating services)


    Referencing This Standard

    DOI: 10.1520/D4399-05R11

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D4399-05(2011), Standard Test Method for Measuring Electrical Conductivity of Electrocoat Baths, ASTM International, West Conshohocken, PA, 2011, www.astm.org

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