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ASTM D4007-11(2016)e1

Historical Revision

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

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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 (API MPMS Chapter 10.2) (Note 1), and sediment by extraction, Test Method D473 (API MPMS Chapter 10.1), shall be used.

Note 1: Test Method D4006 (API MPMS Chapter 10.2) 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 standard.

1.2.1 Exception—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. Specific warning statements appear in 6.1, 8.3, and A1.5.4.


4.1 The water and sediment content of crude oil is significant because it can cause corrosion of equipment and problems in processing. A determination of water and sediment content is required to measure accurately net volumes of actual oil in sales, taxation, exchanges, and custody transfers. It is not anticipated that this test method, which is written with a dedicated laboratory facility in mind, is likely to be used in field test rooms or sample rooms due to safety concerns for proper ventilation and handling.

4.2 This test method may not be suitable for crude oils that contain alcohols that are soluble in water. In cases where the impact on the results may be significant, the user is advised to consider using another test method, such as Test Method D4928 (API MPMS Chapter 10.9).

SDO ASTM: ASTM International
Document Number D4007
Publication Date June 1, 2016
Language en - English
Page Count 13
Revision Level 11(2016)e1
Supercedes
Committee D02.02
Publish Date Document Id Type View
Oct. 1, 2022 D4007-22 Revision
June 1, 2016 D4007-11R16E01 Revision
June 1, 2011 D4007-11E01 Revision
June 1, 2011 D4007-11 Revision
March 1, 2008 D4007-08 Revision
Dec. 10, 2002 D4007-02 Revision
Jan. 1, 1995 D4007-81R95E01 Revision
June 1, 2016 D4007-11R16 Reaffirmation
Nov. 1, 2006 D4007-02R06 Reaffirmation