ASTM D5478 - 13

    Standard Test Methods for Viscosity of Materials by a Falling Needle Viscometer

    Active Standard ASTM D5478 | Developed by Subcommittee: D01.24

    Book of Standards Volume: 06.01


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    Significance and Use

    5.1 These test methods are applicable for measuring the rheological properties of varnishes and paints. In particular, the low to moderate shear rate measurements provide information related to sag resistance, leveling, etc.

    1. Scope

    1.1 These test methods cover the measurement of the viscosity of Newtonian and non-Newtonian liquids. These test methods are applicable to liquids having viscosities in the range from 5 × 10−4 to 103 Pa·s (0.5 to 106 cP). The shear rate range is dependent upon the needle used and viscosity of the liquid and may vary from 10−4 to 103 s−1. With an extension bar and applied weight, a shear rate of 104 s–1 may be achieved.

    1.2 The yield stress of liquids having this property may also be determined.

    1.3 These test methods consist of determining liquid viscosities of Newtonian and non-Newtonian fluids (clear or opaque) by measuring the steady-state (constant) or terminal velocities of cylindrical needles as they fall through the test liquid under the influence of gravity. Yield stresses of non-Newtonian liquids may be measured using the same procedure.

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

    1.5 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

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids


    ICS Code

    ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)

    UNSPSC Code

    UNSPSC Code 73101611(Paints or varnishes or lacquers production services)


    Referencing This Standard

    DOI: 10.1520/D5478-13

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D5478-13, Standard Test Methods for Viscosity of Materials by a Falling Needle Viscometer, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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