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ASTM D4176-04e1

Historical Revision

Standard Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures)

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1.1 This test method covers two procedures for estimating the presence of suspended free water and solid particulate contamination in distillate fuels having distillation end points below 400C and an ASTM color of 5 or less.

1.1.1 Both procedures can be used as field tests at storage temperatures, or as laboratory tests at controlled temperatures.

1.1.2 Procedure 1 provides a rapid pass/fail method for contamination. Procedure 2 provides a gross numerical rating of haze appearance.

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


It has long been the practice to include in fuel specifications a requirement that the fuel be clear and bright and free of visible particulate matter (see Note 1). However, there has been no standard method for making this determination so that practices have differed. This test method provides standard procedures for the test.

Note 1—Clean and bright is sometimes used in place of clear and bright. The meaning is identical.

Procedure 1 provides a rapid pass/fail method for contamination in a distillate fuel. Procedure 2 provides a gross numerical rating of haze appearance, primarily as a communication tool. Other test methods, including Test Methods D 1744, D 2276, D 2709, and D 4860, permit quantitative determinations of contaminants. No relationship has been established between Procedure 2 and various quantitative methods.

Limited laboratory evaluations of samples that have failed this clear and bright test indicate that an experienced tester can detect as little as 40 ppm of free water in the fuel.

SDO ASTM: ASTM International
Document Number D4176
Publication Date Nov. 1, 2004
Language en - English
Page Count 4
Revision Level 04e1
Supercedes
Committee D02.14
Publish Date Document Id Type View
Oct. 1, 2022 D4176-22 Revision
July 1, 2021 D4176-21A Revision
May 1, 2021 D4176-21 Revision
Nov. 1, 2020 D4176-20 Revision
Nov. 1, 2004 D4176-04E01 Revision
Nov. 1, 2004 D4176-04 Revision
Feb. 10, 2002 D4176-93R97 Revision
Feb. 10, 2002 D4176-02 Revision
Dec. 1, 2019 D4176-04R19 Reaffirmation
Oct. 1, 2014 D4176-04R14 Reaffirmation
June 1, 2009 D4176-04R09 Reaffirmation