1.1 This test method covers a rapid portable means for field and laboratory use to rate the ability of diesel fuels (both neat and those containing additives) to release entrained or emulsified water when passed through fiberglass coalescing material.
1.2 This test method is applicable to diesel fuels such as Specification D975 Grade No. 1-D and Grade No. 2-D of all sulfur levels, Specification D7467 biodiesel blends B6-B20, and MIL-DTL-16884, naval distillate fuel (NATO F-76). NOTE 1—This test method is similar to Test Method D3948 which is applicable to aviation turbine fuels.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D7261-17 Referenced Document
ASTM D1193 Standard Specification for Reagent Water
ASTM D3948 Standard Test Method for Determining Water Separation Characteristics of Aviation Turbine Fuels by Portable Separometer
ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
ASTM D4176 Standard Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures)
ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
ASTM D4306 Standard Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination
ASTM D4860 Standard Test Method for Free Water and Particulate Contamination in Mid-Distillate Fuels (Clear and Bright Numerical Rating)
ASTM D6300 Standard Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
ASTM D6426 Standard Test Method for Determining Filterability of Distillate Fuel Oils
ASTM D7224 Standard Test Method for Determining Water Separation Characteristics of Kerosine-Type Aviation Turbine Fuels Containing Additives by Portable Separometer*, 2023-01-15 Update
ASTM D7467 Standard Specification for Diesel Fuel Oil, Biodiesel Blend (B6 to B20)*, 2023-10-01 Update
ASTM D975 Standard Specification for Diesel Fuel Oils
ASTM D7261-17 history
2022ASTM D7261-22 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2017ASTM D7261-17 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2014ASTM D7261-14 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2013ASTM D7261-13 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2012ASTM D7261-12 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2008ASTM D7261-08 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2007ASTM D7261-07 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2006ASTM D7261-06a Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
2006ASTM D7261-06 Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer