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    Fundamental Viscosity and How It is Measured

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    This paper covers definitions of fundamental viscosity, absolute viscosity, and kinematic viscosity. The various units and terminology used to measure viscosity are defined. Other factors contributing to a better understanding of the nature of viscosity are discussed, such as types of fluid flow, Reynolds number, and initial and apparent viscosity. Several viscometers currently in use in industry and research are covered briefly. The general range of application, operation, and the normally expected precision of each type of viscometer are discussed.

    Author Information:

    Levy, D F
    Phillips Petroleum Co., Bartlesville, Okla.

    Committee/Subcommittee: D04.40

    DOI: 10.1520/STP43699S