ASTM D7261-06 - 15.8.2006
 
1. Scope

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 D 975 Grade No. 1 and Grade No. 2 of all sulfur levels, and MIL-F-16884, naval distillate fuel (NATO F-76).

Note 1

This test method is similar to Test Method D 3948 which is applicable to aviation turbine fuels.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.

 
2. Referenced Documents

D3948-22

Standard Test Method for Determining Water Separation Characteristics of Aviation Turbine Fuels by Portable Separometer

D4057-22

Standard Practice for Manual Sampling of Petroleum and Petroleum Products

D4176-22e1

Standard Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures) (Includes all amendments and changes 6/30/2025).

D4177-22e1

Standard Practice for Automatic Sampling of Petroleum and Petroleum Products (Includes all amendments and changes 3/24/2023).

MIL-F-16884

Fuel, Naval Distillate (NATO F-76) Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.

D4860-22

Standard Test Method for Free Water and Particulate Contamination in Middle Distillate Fuels (Clear and Bright Numerical Rating)

D1193-24

Standard Specification for Reagent Water

D975-26b

Standard Specification for Diesel Fuel (Includes all amendments and changes 3/31/2026).

D7224-26

Standard Test Method for Determining Water Separation Characteristics of Kerosine-Type Aviation Turbine Fuels Containing Additives by Portable Separometer

D6426-22

Standard Test Method for Determining Filterability of Middle Distillate Fuel Oils

D4306-20

Standard Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination