Standard Test Method for
Water in Crude Oil by Distillation1
This standard is issued under the fixed designation D 4006; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This test method has been approved by the sponsoring committees and accepted by the Cooperating Societies in accordance with
established procedures. This method was issued as a joint ASTM-API-IP standard in 1981.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This test method covers the determination of water in
crude oil by distillation.
1.2 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 A1.1.
2. Referenced Documents
2.1 ASTM Standards:
D 95 Test Method for Water in Petroleum Products and
Bituminous Materials by Distillation2
D 96 Test Methods for Water and Sediment in Crude Oil by
Centrifuge Method (Field Procedure)2
D 473 Test Method for Sediment in Crude Oils and Fuel
Oils by the Extraction Method2
D 665 Test Method for Rust-Preventing Characteristics of
Inhibited Mineral Oil in the Presence of Water2
D 1796 Test Method for Water and Sediment in Fuel Oils
by the Centrifuge Method (Laboratory Procedure)2
D 4057 Practice for Manual Sampling of Petroleum and
Petroleum Products3
D 4177 Practice for Automatic Sampling of Petroleum and
Petroleum Products3
E 123 Specification for Apparatus for Determination of
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