ASTM D4007-81(1995)e1

    Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure)


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    1. Scope

    1.1 This test method describes the laboratory determination of water and sediment in crude oils by means of the centrifuge procedure. This centrifuge method for determining water and sediment in crude oils is not entirely satisfactory. The amount of water detected is almost always lower than the actual water content. When a highly accurate value is required, the revised procedures for water by distillation (Test Method D4006 (Note 1)) and sediment by extraction (Test Method D473) must be used.

    Note 1-Test Method D4006 has been determined to be the preferred and most accurate method for the determination of water.

    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. For specific precautionary statements, see 6.1 and 7.


    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

    D95 Test Method for Water in Petroleum Products and Bituminous Materials by Distillation (API MPMS Chapter 10.5)

    D473 Test Method for Sediment in Crude Oils and Fuel Oils by the Extraction Method (API MPMS Chapter 10.1)

    D665 Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water

    D1796

    D4006 Test Method for Water in Crude Oil by Distillation (API MPMS Chapter 10.2)

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products (API MPMS Chapter 8.1)

    D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products (API MPMS Chapter 8.2)

    D4928 Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration (API MPMS Chapter 10.9)

    D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products (API MPMS Chapter 8.3)

    E969 Specification for Glass Volumetric (Transfer) Pipets


    ICS Code

    ICS Number Code 75.040 (Crude petroleum)

    Referencing This Standard
    Link Here
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    DOI: 10.1520/D4007-81R95E01

    Citation Format

    ASTM D4007-81(1995)e1, Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure), ASTM International, West Conshohocken, PA, 1995, www.astm.org

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