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ASTM D2709-22

Current Revision

Standard Test Method for Water and Sediment in Middle Distillate Fuels by Centrifuge

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1.1 This test method covers the determination of the volume of free water and sediment (as a percentage of the sample) that is suspended in the bulk fuel in middle distillate fuels with viscosities in the range of 1.0 mm2/s to 4.1 mm2/s at 40 °C (1.0 cSt to 4.1 cSt at 104 °F) and densities in the range of 770 kg/m3 to 900 kg/m3 at 15 °C.

Note 1: Fuels corresponding to Specification D396 Grades No. 1 and 2, D975 Grades No. 1-D and 2-D, Specification D2880 Grades No. 0-GT, 1-GT and 2-GT, and Specification D3699 Grades No. 1-K and 2-K and similar middle distillate fuels and blendstocks will usually fall in this viscosity and density range. Test Method D1796 is intended for higher viscosity fuel oils.

1.2 The values stated in SI units are to be regarded as standard.

1.2.1 Exception—The non-SI values 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 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.


5.1 This test method is used as an indication of free water and sediment suspended as haze, cloudiness, or droplets in middle distillate fuels such as Grades No. 1 and 2 fuel oil (Specification D396), Grades No. 1-D and 2-D diesel fuel (Specification D975), and Grades No. 0-GT, 1-GT, and 2-GT gas turbine fuels (Specification D2880), similar fuels and blendstocks used to make these fuels.

5.2 Appreciable amounts of free water and sediment in a fuel oil tend to cause fouling of fuel-handling facilities and to give trouble in the fuel system of a burner or engine. An accumulation of sediment in storage tanks and on filter screens can obstruct the flow of oil from the tank to the combustor. Free water in middle distillate fuels can cause corrosion of tanks and equipment, and if detergent is present, the water can cause emulsions or a hazy appearance. Free water can support microbiological growth at fuel-water interfaces in fuel systems.

(A) Measured between tips of opposite tubes when in rotating position.
(B) “r/min” is the correct SI symbol for the former term “rpm.”

SDO ASTM: ASTM International
Document Number D2709
Publication Date July 1, 2022
Language en - English
Page Count 3
Revision Level 22
Supercedes
Committee D02.14
Publish Date Document Id Type View
July 1, 2022 D2709-22 Revision
April 1, 2016 D2709-16 Revision
Aug. 17, 1999 D2709-96E02 Revision
Not Available D2709-88 Revision
May 1, 2011 D2709-96R11E01 Reaffirmation
May 1, 2006 D2709-96R06 Reaffirmation
June 10, 2001 D2709-96R01E01 Reaffirmation